interface: T4627: support IPv6 Interface Identifier (token) for SLAAC

Add common IPv6 CLI option (use ethernet as example):
  set interfaces ethernet eth0 ipv6 address interface-identifier

Co-authored-by: Christian Breunig <christian@breunig.cc>

1 files changed, 12 insertions, 0 deletions

diff --git a/smoketest/scripts/cli/base_interfaces_test.py b/smoketest/scripts/cli/base_interfaces_test.py
index 3e2653a2f..5348b0cc3 100644
--- a/smoketest/scripts/cli/base_interfaces_test.py
+++ b/smoketest/scripts/cli/base_interfaces_test.py
@@ -14,6 +14,7 @@
 
 import re
 
+from json import loads
 from netifaces import AF_INET
 from netifaces import AF_INET6
 from netifaces import ifaddresses
@@ -1067,6 +1068,7 @@ class BasicInterfaceTest:
             dad_transmits = '10'
             accept_dad = '0'
             source_validation = 'strict'
+            interface_identifier = '::fffe'
 
             for interface in self._interfaces:
                 path = self._base_path + [interface]
@@ -1089,6 +1091,9 @@ class BasicInterfaceTest:
                 if cli_defined(self._base_path + ['ipv6'], 'source-validation'):
                     self.cli_set(path + ['ipv6', 'source-validation', source_validation])
 
+                if cli_defined(self._base_path + ['ipv6', 'address'], 'interface-identifier'):
+                    self.cli_set(path + ['ipv6', 'address', 'interface-identifier', interface_identifier])
+
             self.cli_commit()
 
             for interface in self._interfaces:
@@ -1120,6 +1125,13 @@ class BasicInterfaceTest:
                             self.assertIn('fib saddr . iif oif 0', line)
                             self.assertIn('drop', line)
 
+                if cli_defined(self._base_path + ['ipv6', 'address'], 'interface-identifier'):
+                    tmp = cmd(f'ip -j token show dev {interface}')
+                    tmp = loads(tmp)[0]
+                    self.assertEqual(tmp['token'], interface_identifier)
+                    self.assertEqual(tmp['ifname'], interface)
+
+
         def test_dhcpv6_client_options(self):
             if not self._test_ipv6_dhcpc6:
                 self.skipTest(MSG_TESTCASE_UNSUPPORTED)