[Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Dave Taht
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. https://bugs.openwrt.org/index.php?do=details_id=1763 -- Dave Täht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Dave Taht
Here you go! Going to go look at the firewall rules in a sec On Mon, Oct 1, 2018 at 8:45 AM Mikael Abrahamsson 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

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Dave Taht
On Mon, Oct 1, 2018 at 8:58 AM Dave Taht 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

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Dave Taht
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 wrote: > > On Mon, Oct 1, 2018 at 8:58 AM Dave Taht

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Anderson, Charles R
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:

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Mikael Abrahamsson
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 port 546 or port 547 or icmp6" as your WAN is

[Cerowrt-devel] fios turning up ipv6

2018-10-01 Thread Dave Taht
https://www.dslreports.com/forum/r32136440-Networking-IPv6-working -- Dave Täht CEO, TekLibre, LLC http://www.teklibre.com Tel: 1-669-226-2619 ___ Cerowrt-devel mailing list Cerowrt-devel@lists.bufferbloat.net

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Dave Taht
On Mon, Oct 1, 2018 at 9:29 AM Anderson, Charles R 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

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Michael Richardson
Dave Taht wrote: > hmm... bad udp checksum??? With some capture mechanisms, tcpdump gets bogus values because the hardware did the checksums. I wouldn't imagine that we have hardware checksum offload on openwrt devices, but could be. Or it's a real issue. > :/tmp# 09:12:17.404257 IP6

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Dave Taht
On Mon, Oct 1, 2018 at 10:13 AM Michael Richardson wrote: > > > Dave Taht wrote: > > hmm... bad udp checksum??? > > With some capture mechanisms, tcpdump gets bogus values because the hardware > did the checksums. I wouldn't imagine that we have hardware checksum offload > on openwrt

Re: [Cerowrt-devel] ipv6 on comcast with 18.06.1

2018-10-01 Thread Mikael Abrahamsson
On Mon, 1 Oct 2018, Dave Taht wrote: On Mon, Oct 1, 2018 at 8:58 AM Dave Taht 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