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-rw-r--r--python/vyos/configverify.py10
1 files changed, 8 insertions, 2 deletions
diff --git a/python/vyos/configverify.py b/python/vyos/configverify.py
index fcc8cc733..8fddd91d0 100644
--- a/python/vyos/configverify.py
+++ b/python/vyos/configverify.py
@@ -36,8 +36,14 @@ def verify_mtu(config):
mtu = int(config['mtu'])
tmp = Interface(config['ifname'])
- min_mtu = tmp.get_min_mtu()
- max_mtu = tmp.get_max_mtu()
+ # Not all interfaces support min/max MTU
+ # https://vyos.dev/T5011
+ try:
+ min_mtu = tmp.get_min_mtu()
+ max_mtu = tmp.get_max_mtu()
+ except: # Fallback to defaults
+ min_mtu = 68
+ max_mtu = 9000
if mtu < min_mtu:
raise ConfigError(f'Interface MTU too low, ' \