Divergence of configuration database and real interface configuration


New Member
Feb 12, 2019
I've done something careless for LXC container 301 in web interface and now I ended up with the following:

Interfaces currently present on the host:
veth301i0, veth301i1, veth301i2

Interfaces seen in the containter:
eth0, eth1, eth2

But "pct config" and web interface show only two interfaces:

net0: name=eth0,bridge=vmbr10,gw=x.y.z.c,hwaddr=B2:28:13:FB:D0:96,ip=a.b.c.d/29,type=veth
net1: name=eth1,bridge=vmbr0,hwaddr=3E:1D:D9:21:E8:82,ip=,type=veth

When I try to add network device to this container, I got the error:
failed to open /proc/sys/net/ipv6/conf/veth301i2p/disable_ipv6 for writing: No such file or directory (500)
(Note "p" at the end of veth301i2p! What does this mean?)

How can I recover from this?

Probably related: https://forum.proxmox.com/threads/erroro-migrating-lxc-container-failed-to-open-disable_ipv6.48191/
Solved: I've added missing interface to /etc/pve/lxc/301.conf manually, and then deleted it in web interface.


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