vxlan: T4120: add ability to set multiple remotes (PR #1127)

VXLAN does support using multiple remotes but VyOS does not. Add the ability
to set multiple remotes and add their flood lists using "bridge" command.

(cherry picked from commit 0ecddff7cffa8900d351d5c15e32420f9d780c0b)

1 files changed, 34 insertions, 0 deletions

diff --git a/src/conf_mode/interfaces-vxlan.py b/src/conf_mode/interfaces-vxlan.py
index c035557f0..ee8f26d21 100755
--- a/src/conf_mode/interfaces-vxlan.py
+++ b/src/conf_mode/interfaces-vxlan.py
@@ -44,6 +44,13 @@ def get_config(config=None):
     base = ['interfaces', 'vxlan']
     vxlan = get_interface_dict(conf, base)
 
+    # leave first remote in dict and put the other ones (if they exists) to "other_remotes"
+    remotes = vxlan.get('remote')
+    if remotes:
+        vxlan['remote'] = remotes[0]
+        if len(remotes) > 1:
+            del remotes[0]
+            vxlan['other_remotes'] = remotes
     return vxlan
 
 def verify(vxlan):
@@ -81,6 +88,33 @@ def verify(vxlan):
             raise ConfigError(f'Underlaying device MTU is to small ({lower_mtu} '\
                               f'bytes) for VXLAN overhead ({vxlan_overhead} bytes!)')
 
+    # Check for mixed IPv4 and IPv6 addresses
+    protocol = None
+    if 'source_address' in vxlan:
+        if is_ipv6(vxlan['source_address']):
+            protocol = 'ipv6'
+        else:
+            protocol = 'ipv4'
+    if 'remote' in vxlan:
+        if is_ipv6(vxlan['remote']):
+            if protocol == 'ipv4':
+                raise ConfigError('IPv4 and IPV6 cannot be mixed')
+            protocol = 'ipv6'
+        else:
+            if protocol == 'ipv6':
+                raise ConfigError('IPv4 and IPV6 cannot be mixed')
+            protocol = 'ipv4'
+    if 'other_remotes' in vxlan:
+        for rem in vxlan['other_remotes']:
+            if is_ipv6(rem):
+                if protocol == 'ipv4':
+                    raise ConfigError('IPv4 and IPV6 cannot be mixed')
+                protocol = 'ipv6'
+            else:
+                if protocol == 'ipv6':
+                    raise ConfigError('IPv4 and IPV6 cannot be mixed')
+                protocol = 'ipv4'
+
     verify_mtu_ipv6(vxlan)
     verify_address(vxlan)
     return None