I have a base interface of em1 with the following configuration: UUID=<uuid> HWADDR=<mac> TYPE=Ethernet NM_CONTROLLED="yes" DEVICE="em1" ONBOOT="yes" DEFROUTE=no And em1.3 with: DEVICE=em1.3 NM_CONTROLLED="yes" ONBOOT=yes BOOTPROTO=dhcp DEFROUTE=yes VLAN=yes NM gets the dhcp address on em1.3 as it should, but it also assigns it to em1. Fortunately, I discovered the defroute option, so routing actually does work now (it was originally using em1 as the default route). This exact same configuration works with the old network service. Why is it assigning the vlan address to the underlying interface? Is there some setting that I need to add?
I discovered that I can do BOOTPROTO=none in the em1 config. This works, but gives several of the following lines in the log: NetworkManager[26630]: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-em1 ... NetworkManager[26630]: ifcfg-rh: error: addresses
To further clarify the original issue, it appears that NM, unlike the previous network service, will assume DHCP if there is no other option given. It actually did a separate DHCP transaction for em1 and em1.3. Some strange configuration on the switch was putting the untagged packets through to the right vlan.
I rebooted the server and NetworkManger assigned em1 to be the default route using dhcp despite the ifcfg settings. I restarted NM and it had em1.3 as the default route briefly, then went back to em1. So there is still a serious issue with NM handling of either the ifcfg settings or vlans. It isn't respecting the BOOTPROTO=none or the DEFROUTE settings. I have disabled NM and am using the network service now. /etc/NetworkManager/system-connections/ is empty (as it should be).
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