fix(dns): Ignore link-local IPv6 address

selfprivacy_api/graphql/common_types/service.py

@@ -8,6 +8,7 @@ from selfprivacy_api.graphql.common_types.dns import DnsRecord
 from selfprivacy_api.services import get_service_by_id, get_services_by_location
 from selfprivacy_api.services import Service as ServiceInterface
 from selfprivacy_api.utils.block_devices import BlockDevices
+import selfprivacy_api.utils.network as network_utils
 
 
 def get_usages(root: "StorageVolume") -> list["StorageUsageInterface"]:
@@ -141,7 +142,9 @@ def service_to_graphql_service(service: ServiceInterface) -> Service:
                 priority=record.priority,
                 display_name=record.display_name,
             )
-            for record in service.get_dns_records()
+            for record in service.get_dns_records(
+                network_utils.get_ip4(), network_utils.get_ip6()
+            )
         ],
     )
 

selfprivacy_api/services/__init__.py

@@ -56,14 +56,18 @@ def get_all_required_dns_records() -> list[ServiceDnsRecord]:
             ttl=3600,
             display_name="SelfPrivacy API",
         ),
-        ServiceDnsRecord(
-            type="AAAA",
-            name="api",
-            content=ip6,
-            ttl=3600,
-            display_name="SelfPrivacy API (IPv6)",
-        ),
     ]
+
+    if ip6 is not None:
+        dns_records.append(
+            ServiceDnsRecord(
+                type="AAAA",
+                name="api",
+                content=ip6,
+                ttl=3600,
+                display_name="SelfPrivacy API (IPv6)",
+            )
+        )
     for service in get_enabled_services():
-        dns_records += service.get_dns_records()
+        dns_records += service.get_dns_records(ip4, ip6)
     return dns_records

selfprivacy_api/services/bitwarden/__init__.py

@@ -1,15 +1,14 @@
 """Class representing Bitwarden service"""
 import base64
 import subprocess
-import typing
+from typing import Optional, List
 
 from selfprivacy_api.jobs import Job, Jobs
 from selfprivacy_api.services.generic_service_mover import FolderMoveNames, move_service
 from selfprivacy_api.services.generic_status_getter import get_service_status
-from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
+from selfprivacy_api.services.service import Service, ServiceStatus
-from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
+from selfprivacy_api.utils import get_domain
 from selfprivacy_api.utils.block_devices import BlockDevice
-import selfprivacy_api.utils.network as network_utils
 from selfprivacy_api.services.bitwarden.icon import BITWARDEN_ICON
 
 
@@ -41,11 +40,15 @@ class Bitwarden(Service):
         return "vaultwarden"
 
     @staticmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """Return service url."""
         domain = get_domain()
         return f"https://password.{domain}"
 
+    @staticmethod
+    def get_subdomain() -> Optional[str]:
+        return "password"
+
     @staticmethod
     def is_movable() -> bool:
         return True
@@ -96,29 +99,9 @@ class Bitwarden(Service):
         return ""
 
     @staticmethod
-    def get_folders() -> typing.List[str]:
+    def get_folders() -> List[str]:
         return ["/var/lib/bitwarden", "/var/lib/bitwarden_rs"]
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        """Return list of DNS records for Bitwarden service."""
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="password",
-                content=network_utils.get_ip4(),
-                ttl=3600,
-                display_name="Bitwarden",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="password",
-                content=network_utils.get_ip6(),
-                ttl=3600,
-                display_name="Bitwarden (IPv6)",
-            ),
-        ]
-
     def move_to_volume(self, volume: BlockDevice) -> Job:
         job = Jobs.add(
             type_id="services.bitwarden.move",

selfprivacy_api/services/gitea/__init__.py

@@ -1,15 +1,14 @@
 """Class representing Bitwarden service"""
 import base64
 import subprocess
-import typing
+from typing import Optional, List
 
 from selfprivacy_api.jobs import Job, Jobs
 from selfprivacy_api.services.generic_service_mover import FolderMoveNames, move_service
 from selfprivacy_api.services.generic_status_getter import get_service_status
-from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
+from selfprivacy_api.services.service import Service, ServiceStatus
-from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
+from selfprivacy_api.utils import get_domain
 from selfprivacy_api.utils.block_devices import BlockDevice
-import selfprivacy_api.utils.network as network_utils
 from selfprivacy_api.services.gitea.icon import GITEA_ICON
 
 
@@ -37,11 +36,15 @@ class Gitea(Service):
         return base64.b64encode(GITEA_ICON.encode("utf-8")).decode("utf-8")
 
     @staticmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """Return service url."""
         domain = get_domain()
         return f"https://git.{domain}"
 
+    @staticmethod
+    def get_subdomain() -> Optional[str]:
+        return "git"
+
     @staticmethod
     def is_movable() -> bool:
         return True
@@ -91,28 +94,9 @@ class Gitea(Service):
         return ""
 
     @staticmethod
-    def get_folders() -> typing.List[str]:
+    def get_folders() -> List[str]:
         return ["/var/lib/gitea"]
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="git",
-                content=network_utils.get_ip4(),
-                ttl=3600,
-                display_name="Gitea",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="git",
-                content=network_utils.get_ip6(),
-                ttl=3600,
-                display_name="Gitea (IPv6)",
-            ),
-        ]
-
     def move_to_volume(self, volume: BlockDevice) -> Job:
         job = Jobs.add(
             type_id="services.gitea.move",

selfprivacy_api/services/jitsimeet/__init__.py

@@ -1,16 +1,15 @@
 """Class representing Jitsi Meet service"""
 import base64
 import subprocess
-import typing
+from typing import Optional, List
 
 from selfprivacy_api.jobs import Job
 from selfprivacy_api.services.generic_status_getter import (
     get_service_status_from_several_units,
 )
-from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
+from selfprivacy_api.services.service import Service, ServiceStatus
-from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
+from selfprivacy_api.utils import get_domain
 from selfprivacy_api.utils.block_devices import BlockDevice
-import selfprivacy_api.utils.network as network_utils
 from selfprivacy_api.services.jitsimeet.icon import JITSI_ICON
 
 
@@ -38,11 +37,15 @@ class JitsiMeet(Service):
         return base64.b64encode(JITSI_ICON.encode("utf-8")).decode("utf-8")
 
     @staticmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """Return service url."""
         domain = get_domain()
         return f"https://meet.{domain}"
 
+    @staticmethod
+    def get_subdomain() -> Optional[str]:
+        return "meet"
+
     @staticmethod
     def is_movable() -> bool:
         return False
@@ -98,29 +101,8 @@ class JitsiMeet(Service):
         return ""
 
     @staticmethod
-    def get_folders() -> typing.List[str]:
+    def get_folders() -> List[str]:
         return ["/var/lib/jitsi-meet"]
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        ip4 = network_utils.get_ip4()
-        ip6 = network_utils.get_ip6()
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="meet",
-                content=ip4,
-                ttl=3600,
-                display_name="Jitsi",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="meet",
-                content=ip6,
-                ttl=3600,
-                display_name="Jitsi (IPv6)",
-            ),
-        ]
-
     def move_to_volume(self, volume: BlockDevice) -> Job:
         raise NotImplementedError("jitsi-meet service is not movable")

selfprivacy_api/services/mailserver/__init__.py

@@ -2,7 +2,7 @@
 
 import base64
 import subprocess
-import typing
+from typing import Optional, List
 
 from selfprivacy_api.jobs import Job, Jobs
 from selfprivacy_api.services.generic_service_mover import FolderMoveNames, move_service
@@ -12,7 +12,6 @@ from selfprivacy_api.services.generic_status_getter import (
 from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
 from selfprivacy_api import utils
 from selfprivacy_api.utils.block_devices import BlockDevice
-import selfprivacy_api.utils.network as network_utils
 from selfprivacy_api.services.mailserver.icon import MAILSERVER_ICON
 
 
@@ -40,10 +39,14 @@ class MailServer(Service):
         return "virtualMail"
 
     @staticmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """Return service url."""
         return None
 
+    @staticmethod
+    def get_subdomain() -> str | None:
+        return None
+
     @staticmethod
     def is_movable() -> bool:
         return True
@@ -102,20 +105,18 @@ class MailServer(Service):
         return ""
 
     @staticmethod
-    def get_folders() -> typing.List[str]:
+    def get_folders() -> List[str]:
         return ["/var/vmail", "/var/sieve"]
 
-    @staticmethod
+    @classmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
+    def get_dns_records(cls, ip4: str, ip6: Optional[str]) -> List[ServiceDnsRecord]:
         domain = utils.get_domain()
         dkim_record = utils.get_dkim_key(domain)
-        ip4 = network_utils.get_ip4()
-        ip6 = network_utils.get_ip6()
 
         if dkim_record is None:
             return []
 
-        return [
+        dns_records = [
             ServiceDnsRecord(
                 type="A",
                 name=domain,
@@ -123,13 +124,6 @@ class MailServer(Service):
                 ttl=3600,
                 display_name="Root Domain",
             ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name=domain,
-                content=ip6,
-                ttl=3600,
-                display_name="Root Domain (IPv6)",
-            ),
             ServiceDnsRecord(
                 type="MX",
                 name=domain,
@@ -161,6 +155,18 @@ class MailServer(Service):
             ),
         ]
 
+        if ip6 is not None:
+            dns_records.append(
+                ServiceDnsRecord(
+                    type="AAAA",
+                    name=domain,
+                    content=ip6,
+                    ttl=3600,
+                    display_name="Root Domain (IPv6)",
+                ),
+            )
+        return dns_records
+
     def move_to_volume(self, volume: BlockDevice) -> Job:
         job = Jobs.add(
             type_id="services.email.move",

selfprivacy_api/services/nextcloud/__init__.py

@@ -1,14 +1,13 @@
 """Class representing Nextcloud service."""
 import base64
 import subprocess
-import typing
+from typing import Optional, List
 from selfprivacy_api.jobs import Job, Jobs
 from selfprivacy_api.services.generic_service_mover import FolderMoveNames, move_service
 from selfprivacy_api.services.generic_status_getter import get_service_status
-from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
+from selfprivacy_api.services.service import Service, ServiceStatus
-from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
+from selfprivacy_api.utils import get_domain
 from selfprivacy_api.utils.block_devices import BlockDevice
-import selfprivacy_api.utils.network as network_utils
 from selfprivacy_api.services.nextcloud.icon import NEXTCLOUD_ICON
 
 
@@ -36,11 +35,15 @@ class Nextcloud(Service):
         return base64.b64encode(NEXTCLOUD_ICON.encode("utf-8")).decode("utf-8")
 
     @staticmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """Return service url."""
         domain = get_domain()
         return f"https://cloud.{domain}"
 
+    @staticmethod
+    def get_subdomain() -> Optional[str]:
+        return "cloud"
+
     @staticmethod
     def is_movable() -> bool:
         return True
@@ -96,28 +99,9 @@ class Nextcloud(Service):
         return ""
 
     @staticmethod
-    def get_folders() -> typing.List[str]:
+    def get_folders() -> List[str]:
         return ["/var/lib/nextcloud"]
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="cloud",
-                content=network_utils.get_ip4(),
-                ttl=3600,
-                display_name="Nextcloud",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="cloud",
-                content=network_utils.get_ip6(),
-                ttl=3600,
-                display_name="Nextcloud (IPv6)",
-            ),
-        ]
-
     def move_to_volume(self, volume: BlockDevice) -> Job:
         job = Jobs.add(
             type_id="services.nextcloud.move",

selfprivacy_api/services/ocserv/__init__.py

@@ -4,11 +4,9 @@ import subprocess
 import typing
 from selfprivacy_api.jobs import Job
 from selfprivacy_api.services.generic_status_getter import get_service_status
-from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
+from selfprivacy_api.services.service import Service, ServiceStatus
-from selfprivacy_api.utils import ReadUserData, WriteUserData
 from selfprivacy_api.utils.block_devices import BlockDevice
 from selfprivacy_api.services.ocserv.icon import OCSERV_ICON
-import selfprivacy_api.utils.network as network_utils
 
 
 class Ocserv(Service):
@@ -35,6 +33,10 @@ class Ocserv(Service):
         """Return service url."""
         return None
 
+    @staticmethod
+    def get_subdomain() -> typing.Optional[str]:
+        return "vpn"
+
     @staticmethod
     def is_movable() -> bool:
         return False
@@ -79,25 +81,6 @@ class Ocserv(Service):
     def get_logs():
         return ""
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="vpn",
-                content=network_utils.get_ip4(),
-                ttl=3600,
-                display_name="OpenConnect VPN",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="vpn",
-                content=network_utils.get_ip6(),
-                ttl=3600,
-                display_name="OpenConnect VPN (IPv6)",
-            ),
-        ]
-
     @staticmethod
     def get_folders() -> typing.List[str]:
         return []

selfprivacy_api/services/pleroma/__init__.py

@@ -1,15 +1,14 @@
 """Class representing Nextcloud service."""
 import base64
 import subprocess
-import typing
+from typing import Optional, List
 from selfprivacy_api.jobs import Job, Jobs
 from selfprivacy_api.services.generic_service_mover import FolderMoveNames, move_service
 from selfprivacy_api.services.generic_status_getter import get_service_status
-from selfprivacy_api.services.service import Service, ServiceDnsRecord, ServiceStatus
+from selfprivacy_api.services.service import Service, ServiceStatus
 from selfprivacy_api.services.owned_path import OwnedPath
-from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
+from selfprivacy_api.utils import get_domain
 from selfprivacy_api.utils.block_devices import BlockDevice
-import selfprivacy_api.utils.network as network_utils
 from selfprivacy_api.services.pleroma.icon import PLEROMA_ICON
 
 
@@ -33,11 +32,15 @@ class Pleroma(Service):
         return base64.b64encode(PLEROMA_ICON.encode("utf-8")).decode("utf-8")
 
     @staticmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """Return service url."""
         domain = get_domain()
         return f"https://social.{domain}"
 
+    @staticmethod
+    def get_subdomain() -> Optional[str]:
+        return "social"
+
     @staticmethod
     def is_movable() -> bool:
         return True
@@ -82,7 +85,7 @@ class Pleroma(Service):
         return ""
 
     @staticmethod
-    def get_owned_folders() -> typing.List[OwnedPath]:
+    def get_owned_folders() -> List[OwnedPath]:
         """
         Get a list of occupied directories with ownership info
         pleroma has folders that are owned by different users
@@ -100,25 +103,6 @@ class Pleroma(Service):
             ),
         ]
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="social",
-                content=network_utils.get_ip4(),
-                ttl=3600,
-                display_name="Pleroma",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="social",
-                content=network_utils.get_ip6(),
-                ttl=3600,
-                display_name="Pleroma (IPv6)",
-            ),
-        ]
-
     def move_to_volume(self, volume: BlockDevice) -> Job:
         job = Jobs.add(
             type_id="services.pleroma.move",

selfprivacy_api/services/service.py

@@ -1,7 +1,7 @@
 """Abstract class for a service running on a server"""
 from abc import ABC, abstractmethod
 from enum import Enum
-import typing
+from typing import List, Optional
 
 from pydantic import BaseModel
 from selfprivacy_api.jobs import Job
@@ -12,7 +12,7 @@ from selfprivacy_api.services.generic_size_counter import get_storage_usage
 from selfprivacy_api.services.owned_path import OwnedPath
 from selfprivacy_api import utils
 from selfprivacy_api.utils.waitloop import wait_until_true
-from selfprivacy_api.utils import ReadUserData, WriteUserData, get_domain
+from selfprivacy_api.utils import ReadUserData, WriteUserData
 
 DEFAULT_START_STOP_TIMEOUT = 5 * 60
 
@@ -35,7 +35,7 @@ class ServiceDnsRecord(BaseModel):
     content: str
     ttl: int
     display_name: str
-    priority: typing.Optional[int] = None
+    priority: Optional[int] = None
 
 
 class Service(ABC):
@@ -78,14 +78,22 @@ class Service(ABC):
 
     @staticmethod
     @abstractmethod
-    def get_url() -> typing.Optional[str]:
+    def get_url() -> Optional[str]:
         """
         The url of the service if it is accessible from the internet browser.
         """
         pass
 
+    @staticmethod
+    @abstractmethod
+    def get_subdomain() -> Optional[str]:
+        """
+        The assigned primary subdomain for this service.
+        """
+        pass
+
     @classmethod
-    def get_user(cls) -> typing.Optional[str]:
+    def get_user(cls) -> Optional[str]:
         """
         The user that owns the service's files.
         Defaults to the service's id.
@@ -93,7 +101,7 @@ class Service(ABC):
         return cls.get_id()
 
     @classmethod
-    def get_group(cls) -> typing.Optional[str]:
+    def get_group(cls) -> Optional[str]:
         """
         The group that owns the service's files.
         Defaults to the service's user.
@@ -209,10 +217,32 @@ class Service(ABC):
             storage_used += get_storage_usage(folder)
         return storage_used
 
-    @staticmethod
+    @classmethod
-    @abstractmethod
+    def get_dns_records(cls, ip4: str, ip6: Optional[str]) -> List[ServiceDnsRecord]:
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
+        subdomain = cls.get_subdomain()
-        pass
+        display_name = cls.get_display_name()
+        if subdomain is None:
+            return []
+        dns_records = [
+            ServiceDnsRecord(
+                type="A",
+                name=subdomain,
+                content=ip4,
+                ttl=3600,
+                display_name=display_name,
+            )
+        ]
+        if ip6 is not None:
+            dns_records.append(
+                ServiceDnsRecord(
+                    type="AAAA",
+                    name=subdomain,
+                    content=ip6,
+                    ttl=3600,
+                    display_name=f"{display_name} (IPv6)",
+                )
+            )
+        return dns_records
 
     @classmethod
     def get_drive(cls) -> str:
@@ -237,7 +267,7 @@ class Service(ABC):
                 return root_device
 
     @classmethod
-    def get_folders(cls) -> typing.List[str]:
+    def get_folders(cls) -> List[str]:
         """
         get a plain list of occupied directories
         Default extracts info from overriden get_owned_folders()
@@ -249,7 +279,7 @@ class Service(ABC):
         return [owned_folder.path for owned_folder in cls.get_owned_folders()]
 
     @classmethod
-    def get_owned_folders(cls) -> typing.List[OwnedPath]:
+    def get_owned_folders(cls) -> List[OwnedPath]:
         """
         Get a list of occupied directories with ownership info
         Default extracts info from overriden get_folders()

selfprivacy_api/services/test_service/__init__.py

@@ -65,6 +65,10 @@ class DummyService(Service):
         domain = "test.com"
         return f"https://password.{domain}"
 
+    @staticmethod
+    def get_subdomain() -> typing.Optional[str]:
+        return "password"
+
     @classmethod
     def is_movable(cls) -> bool:
         return cls.movable
@@ -185,26 +189,6 @@ class DummyService(Service):
     def get_folders(cls) -> List[str]:
         return cls.folders
 
-    @staticmethod
-    def get_dns_records() -> typing.List[ServiceDnsRecord]:
-        """Return list of DNS records for Bitwarden service."""
-        return [
-            ServiceDnsRecord(
-                type="A",
-                name="password",
-                content=network_utils.get_ip4(),
-                ttl=3600,
-                display_name="Test Service",
-            ),
-            ServiceDnsRecord(
-                type="AAAA",
-                name="password",
-                content=network_utils.get_ip6(),
-                ttl=3600,
-                display_name="Test Service (IPv6)",
-            ),
-        ]
-
     def move_to_volume(self, volume: BlockDevice) -> Job:
         job = Jobs.add(
             type_id=f"services.{self.get_id()}.move",

selfprivacy_api/utils/network.py

@@ -17,13 +17,15 @@ def get_ip4() -> str:
     return ip4.group(1) if ip4 else ""
 
 
-def get_ip6() -> str:
+def get_ip6() -> Optional[str]:
     """Get IPv6 address"""
     try:
         ip6 = subprocess.check_output(["ip", "addr", "show", "dev", "eth0"]).decode(
             "utf-8"
         )
-        ip6 = re.search(r"inet6 (\S+)\/\d+", ip6)
+        # We ignore link-local addresses
+        ip6 = re.search(r"inet6 (?!fe80:\S+)(\S+)\/\d+", ip6)
+
     except subprocess.CalledProcessError:
         ip6 = None
-    return ip6.group(1) if ip6 else ""
+    return ip6.group(1) if ip6 else None

tests/test_network_utils.py

@@ -8,6 +8,19 @@ import pytest
 from selfprivacy_api.utils.network import get_ip4, get_ip6
 
 OUTPUT_STRING = b"""
+2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
+    link/ether 96:00:00:f1:34:ae brd ff:ff:ff:ff:ff:ff
+    altname enp0s3
+    altname ens3
+    inet 157.90.247.192/32 brd 157.90.247.192 scope global dynamic eth0
+       valid_lft 46061sec preferred_lft 35261sec
+    inet6 fe80::9400:ff:fef1:34ae/64 scope link
+       valid_lft forever preferred_lft forever
+    inet6 2a01:4f8:c17:7e3d::2/64 scope global
+       valid_lft forever preferred_lft forever
+"""
+
+OUTPUT_STRING_WITOUT_IP6 = b"""
 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
     link/ether 96:00:00:f1:34:ae brd ff:ff:ff:ff:ff:ff
     altname enp0s3
@@ -31,6 +44,14 @@ def ip_process_mock(mocker):
     return mock
 
 
+@pytest.fixture
+def ip_process_mock_without_ip6(mocker):
+    mock = mocker.patch(
+        "subprocess.check_output", autospec=True, return_value=OUTPUT_STRING_WITOUT_IP6
+    )
+    return mock
+
+
 @pytest.fixture
 def failed_ip_process_mock(mocker):
     mock = mocker.patch(
@@ -62,24 +83,29 @@ def test_get_ip4(ip_process_mock):
 def test_get_ip6(ip_process_mock):
     """Test get IPv6 address"""
     ip6 = get_ip6()
-    assert ip6 == "fe80::9400:ff:fef1:34ae"
+    assert ip6 == "2a01:4f8:c17:7e3d::2"
 
 
 def test_failed_get_ip4(failed_ip_process_mock):
     ip4 = get_ip4()
-    assert ip4 is ""
+    assert ip4 == ""
 
 
 def test_failed_get_ip6(failed_ip_process_mock):
     ip6 = get_ip6()
-    assert ip6 is ""
+    assert ip6 is None
+
+
+def test_failed_get_ip6_when_none(ip_process_mock_without_ip6):
+    ip6 = get_ip6()
+    assert ip6 is None
 
 
 def test_failed_subprocess_get_ip4(failed_subprocess_call):
     ip4 = get_ip4()
-    assert ip4 is ""
+    assert ip4 == ""
 
 
 def test_failed_subprocess_get_ip6(failed_subprocess_call):
     ip6 = get_ip6()
-    assert ip6 is ""
+    assert ip6 is None

tests/test_services.py

@@ -169,12 +169,12 @@ def test_enabling_disabling_writes_json(
 
 # more detailed testing of this is in test_graphql/test_system.py
 def test_mailserver_with_dkim_returns_some_dns(dkim_file):
-    records = MailServer().get_dns_records()
+    records = MailServer().get_dns_records("203.0.113.3", "2001:db8::1")
     assert len(records) > 0
 
 
 def test_mailserver_with_no_dkim_returns_no_dns(no_dkim_file):
-    assert MailServer().get_dns_records() == []
+    assert MailServer().get_dns_records("203.0.113.3", "2001:db8::1") == []
 
 
 def test_services_enabled_by_default(generic_userdata):