[TriLUG] IPv6 tunnel problems

[Brian via TriLUG]

On 3/15/21 10:23 AM, Alan Porter via TriLUG wrote:
> 
>> I'm still running iptables for firewalling, and have no outbound
>> rules, and the default is accept.
> 
> Are you running ip6tables, too?  They are completely separate, ya know.
> It's easy to look in the wrong place when troubleshooting.
> 

Sorry, yes.  I meant ip6tables.  Still, the fact that every last ipv6 TX 
packet is a TX error has me scratching my head.  That wouldn't really 
indicate a firewall problem, or would it?


Here's my ip6tables rules, anyway:
$ ip6tables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     all      anywhere             anywhere             state 
RELATED,ESTABLISHED
ACCEPT     ipv6-icmp    anywhere             anywhere
ACCEPT     all      anywhere             anywhere
ACCEPT     tcp      anywhere             anywhere             state NEW 
tcp dpt:ssh
ACCEPT     udp      anywhere             fe80::/64            udp 
dpt:dhcpv6-client state NEW
REJECT     all      anywhere             anywhere 
reject-with icmp6-adm-prohibited

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
REJECT     all      anywhere             anywhere 
reject-with icmp6-adm-prohibited

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination