Hi Petr, On Sat, Nov 28, 2020 at 8:48 PM Hans Dedecker <dedec...@gmail.com> wrote: > > Hi, > > On Sat, Nov 28, 2020 at 5:04 PM Petr Štetiar <yn...@true.cz> wrote: > > > > Hans Dedecker <dedec...@gmail.com> [2020-11-26 21:19:30]: > > > > Hi, > > > > > Is it possible to have a pcap trace of the DHCPv6 messages on the wan ? > > > I hope to find some time next weekend to investigate the issue further > > > > http://ynezz.true.cz/openwrt/odhcp6c/capture.pcap.gz# > Thank you for the traces; looking into the DHCPv6 packets make the issue > clear. > Packet 22 is a DHCPv6 reply packet in response to a renew which in its > turn is triggered by a DHCPv6 reconfigure packet. > The packet contains an IA-PD option but no IA prefix option which is > strange. According to the DHCPv6 RFC renew messages must be kept > sending when T1 has expired for either an IA address or IA prefix when > the server does not reply the IA address or IA prefix which is > happening in this case. > I will do further investigation how we could protect odhpc6c against > such DHCPv6 server behavior Can you check if commit https://git.openwrt.org/?p=project/odhcp6c.git;a=commit;h=a7b2221f687264c020b7a18a4e690d79f312a667 fixes the issue in your setup ? While doing the test can you put odhcp6c into verbose mode (-v) and take again a pcap trace on the wan ?
Hans > > Hans > > > > Cheers, > > > > Petr _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
