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Your IPv4 endpoint is unreachable or unstable

Started by aziaja, January 26, 2009, 04:12:35 AM

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You should allow protocol 41 (IPv6) packets from the HE endpoint:

iptables -A INPUT -s $IPv4_of_TunnelBroker -p ipv6 -j ACCEPT

Otherwise IPv6 traffic will only flow if you sent the first packet, in which case your ESTABLISHED,RELATED rule would be used.


Agreed.  Also, your rule:
Quoteiptables -I INPUT 1 -s -d -j ACCEPT
might not be the best choice to permit looped back packets.

Try these:
Quote-A INPUT  -j ACCEPT -i lo

-A INPUT  -j ACCEPT -p ipv6 -s tserv15.lax1.ipv6.he.net  (I use this tunnel)
-A OUTPUT -j ACCEPT -p ipv6 -d tserv15.lax1.ipv6.he.net (you could restrict this further)
and in "/etc/protocols":
Quoteipv6    41      IPV6            # ipv6
You should also get used to using iptables-restore instead of separate commands; it's more efficient for bringing up a firewall all at once.