bgp: T3225: Checks if neighbor configured as system address

1 files changed, 5 insertions, 0 deletions

diff --git a/src/conf_mode/protocols_bgp.py b/src/conf_mode/protocols_bgp.py
index 1f93ceb54..185e5d42f 100755
--- a/src/conf_mode/protocols_bgp.py
+++ b/src/conf_mode/protocols_bgp.py
@@ -23,6 +23,7 @@ from vyos.configdict import dict_merge
 from vyos.template import render_to_string
 from vyos.util import call
 from vyos.util import dict_search
+from vyos.validate import is_addr_assigned
 from vyos import ConfigError
 from vyos import frr
 from vyos import airbag
@@ -107,6 +108,10 @@ def verify(bgp):
                 if 'password' in peer_config and ' ' in peer_config['password']:
                     raise ConfigError('You can\'t use spaces in the password')
 
+                # Check if neighbor address is assigned as system interface address
+                if is_addr_assigned(peer):
+                    raise ConfigError(f'Can\'t configure local address as neighbor "{peer}"')
+
                 # Some checks can/must only be done on a neighbor and not a peer-group
                 if neighbor == 'neighbor':
                     # remote-as must be either set explicitly for the neighbor