[SOLVED] IPv6 works with LXC's but not working with VM's

Mark-A

New Member
Nov 20, 2023
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Ok to begin I'm new to ipv6 so this may be a simple oops..

have setup several LXC's and VM's all with IPv6.

the lxc's can ping each other but cannot ping vm's or the bridge vmbr0
the vm's can not ping any ipv6
from shell on the node can ping all lxc's and can ping the bridge and can ping 1 of the vm's but one vm it will not ping.

so any ideas what i am missing or what i might have done wrong?
 
the resolution is simple, because the problem was based on an "ASSUMPTION"
when you build an LXC you enter the network info and it just works... usually
when you build a VM (ubuntu) and you enter the network info and the netplan gets built, and thus the assumption that if it gets built by the installation program it should work, but it appears that when you enter IPv6 info it builds a netplan with piles of errors. so i had several ubuntu LXC's that worked and several ubuntu VM's that would not. when i typed "ip address" i only had a loopback, then i typed "sudo netplan apply" it gave an error, and i quickly found each netplan had nearly a dozen problems from unbalanced parentheses, unaligned indent , etc...