On Mon, Oct 1, 2018 at 9:29 AM Anderson, Charles R <c...@wpi.edu> wrote: > > Is udp checksum offload enabled? If so, tcpdump/wireshark won't see > the actual checksum and assume it is bad.
I imagine it is theoretically offloaded. I DO have an 18.06.1 arm box now up that IS getting dhcpv6-pd from comcast.... This arm box IS getting dhcpv6-pd from comcast correctly. root@gw1:~# cat /etc/openwrt_release DISTRIB_ID='OpenWrt' DISTRIB_RELEASE='18.06.1' DISTRIB_REVISION='r7258-5eb055306f' DISTRIB_TARGET='ipq806x/generic' DISTRIB_ARCH='arm_cortex-a15_neon-vfpv4' DISTRIB_DESCRIPTION='OpenWrt 18.06.1 r7258-5eb055306f' DISTRIB_TAINTS='' My mips and x86_64 boxes aren't. Otherwise based on my 4+ year old memory of this stuff, I don't see anything immediately wrong with the solicit. (I updated the bug, too) > > 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. -- Dave Täht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619 _______________________________________________ Cerowrt-devel mailing list Cerowrt-devel@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/cerowrt-devel