Is udp checksum offload enabled? If so, tcpdump/wireshark won't see the actual checksum and assume it is bad.
On Mon, Oct 01, 2018 at 09:12:57AM -0700, Dave Taht wrote: > hmm... bad udp checksum??? > > :/tmp# 09:12:17.404257 IP6 (flowlabel 0xdfff4, hlim 1, next-header UDP > (17) payload length: 159) fe80::20d:b9ff:fe43:a06c.546 > > ff02::1:2.547: [bad udp cksum 0x58f4 -> 0xc4a1!] > On Mon, Oct 1, 2018 at 9:12 AM Dave Taht <dave.t...@gmail.com> wrote: > > > > On Mon, Oct 1, 2018 at 8:58 AM Dave Taht <dave.t...@gmail.com> wrote: > > > > > > Here you go! Going to go look at the firewall rules in a sec.... > > > > I changed the rules to allow 547 and 546, no difference. I even > > flushed the ipv6tables rules entirely, > > and I'm running without that for a while. I can certainly imagine > > comcast's dhcpv6 server giving up on me.... > > > > It's nice to know, btw, someone is still messing with homenet. Having > > zero funding for > > too many years burned me out on even trying. But I expected ipv6 to > > keep working without > > any more help from me! :( > > > > > On Mon, Oct 1, 2018 at 8:45 AM Mikael Abrahamsson <swm...@swm.pp.se> > > > wrote: > > > > > > > > On Mon, 1 Oct 2018, Dave Taht wrote: > > > > > > > > > Sigh. Once upon a time I used to test this stuff on comcast. So I > > > > > finally got around to deploying > > > > > a new 18.06 gateway and ipv6 is busted with comcast. > > > > > > > > Can you please email me output from "tcpdump -n -vvv -i <wan> port 546 > > > > or > > > > port 547 or icmp6" as your WAN is trying to get DHCPv6-PD ? Or if you > > > > dump > > > > that to a pcap and email it to me (or make it available somewhere for me > > > > to download). > > > > > > > > I have 18.06.1 working with homenet on WRT1200AC,dual uplinks (two > > > > different vlans on WAN), getting dual stack from both ISPs, /56 from > > > > both, > > > > and both are announced out on LAN. I even configured bidirectional SQM > > > > with CAKE on each uplink (250/50 and 250/100 respectively) and it seems > > > > to > > > > do the right thing. _______________________________________________ Cerowrt-devel mailing list Cerowrt-devel@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cerowrt-devel