openvpn: T4679: Fix incorrect verify local and remote address

In the OpenVPN site-to-site config we can use IPv6 peers
without IPv4 configurations but "verify()" checks also local and
remote IPv4 addresses that in this case will be empty lists
For example:

set interfaces openvpn vtun2 local-address 2001:db8::1
set interfaces openvpn vtun2 remote-address 2001:db8::2

Check in the commit (v4loAddr == v4remAddr) <= both empty lists
commit
DEBUG: [] == [] or ['2001:db8::2'] == []

So we should also check v4loAddr, v4remAddr, v6loAddr, v6remAddr
are not empty

1 files changed, 2 insertions, 1 deletions

diff --git a/src/conf_mode/interfaces-openvpn.py b/src/conf_mode/interfaces-openvpn.py
index 7d20b3fd0..fe5898282 100755
--- a/src/conf_mode/interfaces-openvpn.py
+++ b/src/conf_mode/interfaces-openvpn.py
@@ -43,6 +43,7 @@ from vyos.util import chown
 from vyos.util import chmod_600
 from vyos.util import cmd
 from vyos.util import dict_search
+from vyos.util import is_list_equal
 from vyos.util import makedir
 from vyos.validate import is_addr_assigned
 
@@ -159,7 +160,7 @@ def verify(openvpn):
             elif v6remAddr and not v6loAddr:
                 raise ConfigError('IPv6 "remote-address" requires IPv6 "local-address"')
 
-            if (v4loAddr == v4remAddr) or (v6remAddr == v4remAddr):
+            if is_list_equal(v4loAddr, v4remAddr) or is_list_equal(v6loAddr, v6remAddr):
                 raise ConfigError('"local-address" and "remote-address" cannot be the same')
 
             if dict_search('local_host', openvpn) in dict_search('local_address', openvpn):