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net_config: drop MTU from dummy interfaces#245
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os-net-config validates the requested MTU against the kernel-reported max_mtu. Dummy interfaces report max_mtu=0 (meaning 'no limit'), but os-net-config treats 0 literally and rejects any MTU setting: dummy0 Desired MTU 1500 is greater than supported 0 Fix by removing the explicit mtu from the dummy0 and dummy1 bridge members. The OVS bridge handles MTU independently; dummy interfaces used as placeholder bridge members don't need it.
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os-net-config validates the requested MTU against the kernel-reported max_mtu. Dummy interfaces report max_mtu=0 (meaning 'no limit'), but os-net-config treats 0 literally and rejects any MTU setting:
dummy0 Desired MTU 1500 is greater than supported 0
Fix by removing the explicit mtu from the dummy0 and dummy1 bridge members. The OVS bridge handles MTU independently; dummy interfaces used as placeholder bridge members don't need it.