[PVE-User] PX4 and IPv6

Thu Aug 18 15:28:39 CEST 2016

A couple notes:
-) Please disable automatic line breaks in your mail client when sending
dumps like that as that just makes it too hard to read
-) Ideally you just use 'ping' and filter by 'icmp6' instead of 'ip6'
(and perhaps include the options '-vn' in tcpdump). Because for any
other protocol the problem would usually be a different one (firewall,
or the server simply not listening on ipv6)

It looks like your conatiner is seeing the SYN packets and is not
responding. Can you check the running network settings (not the
configuration from /etc) via `# ip -6 addr` and `# ip -6 route` and make
sure the http server is actually listening (eg. via `# ss -tlnp6`).
Maybe stick to pinging to rule out server configuration issues. (Iow.
check the tcpdump of a `ping6` instead of http like mentioned above).

On Thu, Aug 18, 2016 at 11:21:09AM +0200, Guillaume wrote:
[removed linebreaks]
> - It is the same setup, i checked twice.
> - It is a routed setup on an OVH server indeed. NDP entries are on each
> firewall (lxc, node and datacenter).
> 
> Maybe a reboot would help, but i'm trying to avoid that for the moment.
> 
> Here is the tcpdump logs, there seems to be no reply to the ipv6 requests as
> they are showing on the container :
> * Port 80 on working ipv6 container (2001:41d0:1007:1c79::101)
> 
> ** host
> ~# tcpdump -i vmbr0 ip6
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vmbr0, link-type EN10MB (Ethernet), capture size 262144 bytes
> 11:14:31.188568 IP6 fe80::caf9:f9ff:fe58:fb00.2029 > ff02::66.2029: UDP, length 72
> 11:14:31.536156 IP6 fe80::6e50:4dff:feae:a900.2029 > ff02::66.2029: UDP, length 72
> 11:14:35.828631 IP6 fe80::caf9:f9ff:fe58:fb00 > ff02::5: OSPFv3, Hello, length 36
> 11:14:37.568228 IP6 fe80::6e50:4dff:feae:a900.2029 > ff02::66.2029: UDP, length 6
> 11:14:41.186066 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [S], seq 4010901551, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243609104 ecr 0], length 0
> 11:14:41.186191 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.31183: Flags [S.], seq 2044967707, ack 4010901552, win 28560, options [mss 1440,sackOK,TS val 182595146 ecr 3243609104,nop,wscale 7], length 0
> 11:14:41.334748 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 1, win 1026, options [nop,nop,TS val 3243609254 ecr 182595146], length 0
> 11:14:41.334927 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [F.], seq 1, ack 1, win 1026, options [nop,nop,TS val 3243609254 ecr 182595146], length 0
> 11:14:41.334981 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.31183: Flags [F.], seq 1, ack 2, win 224, options [nop,nop,TS val 182595183 ecr 3243609254], length 0
> 11:14:41.338075 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [S], seq 2137551393, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243609254 ecr 0], length 0
> 11:14:41.338186 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [S.], seq 2213057153, ack 2137551394, win 28560, options [mss 1440,sackOK,TS val 182595184 ecr 3243609254,nop,wscale 7], length 0
> 11:14:41.489349 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 2, win 1026, options [nop,nop,TS val 3243609406 ecr 182595183], length 0
> 11:14:41.497826 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 1, win 1026, options [nop,nop,TS val 3243609410 ecr 182595184], length 0
> 11:14:41.497928 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [P.], seq 1:68, ack 1, win 1026, options [nop,nop,TS val 3243609410 ecr 182595184], length 67
> 11:14:41.497965 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [.], ack 68, win 224, options [nop,nop,TS val 182595224 ecr 3243609410], length 0
> 11:14:41.498094 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [P.], seq 1:2273, ack 68, win 224, options [nop,nop,TS val 182595224 ecr 3243609410], length 2272
> 11:14:41.498163 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [FP.], seq 2273:2451, ack 68, win 224, options [nop,nop,TS val 182595224 ecr 3243609410], length 178
> 11:14:41.648498 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 2273, win 990, options [nop,nop,TS val 3243609567 ecr 182595224], length 0
> 11:14:41.648527 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 2452, win 988, options [nop,nop,TS val 3243609567 ecr 182595224], length 0
> 11:14:41.696559 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [F.], seq 68, ack 2452, win 1026, options [nop,nop,TS val 3243609610 ecr 182595224], length 0
> 11:14:41.696641 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [.], ack 69, win 224, options [nop,nop,TS val 182595274 ecr 3243609610], length 0
> 11:14:42.175057 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [S], seq 1761752329, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243610093 ecr 0], length 0
> 11:14:42.175124 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [S.], seq 477212830, ack 1761752330, win 28560, options [mss 1440,sackOK,TS val 182595393 ecr 3243610093,nop,wscale 7], length 0
> 11:14:42.325261 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 1, win 1026, options [nop,nop,TS val 3243610243 ecr 182595393], length 0
> 11:14:42.325422 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [P.], seq 1:518, ack 1, win 1026, options [nop,nop,TS val 3243610243 ecr 182595393], length 517
> 11:14:42.325466 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], ack 518, win 232, options [nop,nop,TS val 182595431 ecr 3243610243], length 0
> 11:14:42.333811 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 1:2857, ack 518, win 232, options [nop,nop,TS val 182595433 ecr 3243610243], length 2856
> 11:14:42.333823 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [P.], seq 2857:3449, ack 518, win 232, options [nop,nop,TS val 182595433 ecr 3243610243], length 592
> 11:14:42.483345 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 2857, win 981, options [nop,nop,TS val 3243610401 ecr 182595433], length 0
> 11:14:42.487568 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [P.], seq 518:676, ack 3449, win 1026, options [nop,nop,TS val 3243610401 ecr 182595433], length 158
> 11:14:42.488817 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [P.], seq 3449:3707, ack 676, win 240, options [nop,nop,TS val 182595472 ecr 3243610401], length 258
> 11:14:42.637407 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [P.], seq 676:775, ack 3707, win 1026, options [nop,nop,TS val 3243610555 ecr 182595472], length 99
> 11:14:42.675992 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], ack 775, win 240, options [nop,nop,TS val 182595519 ecr 3243610555], length 0
> 11:14:42.805947 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 3707:6563, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805959 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 6563:9419, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805964 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 9419:12275, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805973 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 12275:15131, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805979 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 15131:17987, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.955114 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 6563, win 1004, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:42.955143 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 9419, win 959, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:42.955149 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 12275, win 1004, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:42.955255 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 17987:20843, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955259 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 20843:23699, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955261 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 23699:26555, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955264 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 26555:29411, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955267 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 29411:32267, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955270 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 32267:35123, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955325 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 15131, win 959, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:42.955359 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 35123:37979, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955362 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [FP.], seq 37979:39228, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 1249
> 11:14:42.955415 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 17987, win 914, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:43.103510 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 20843, win 981, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.103673 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 23699, win 937, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.104046 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 26555, win 892, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105628 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 29411, win 847, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105637 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 32267, win 803, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105639 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 35123, win 791, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105820 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 37979, win 747, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105878 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 39229, win 727, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.208472 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 39229, win 1025, options [nop,nop,TS val 3243611120 ecr 182595588], length 0
> 11:14:43.220423 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [F.], seq 775, ack 39229, win 1026, options [nop,nop,TS val 3243611130 ecr 182595588], length 0
> 11:14:43.220498 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], ack 776, win 240, options [nop,nop,TS val 182595655 ecr 3243611130], length 0
> 11:14:44.060317 IP6 fe80::6e50:4dff:feae:a900.2029 > ff02::66.2029: UDP, length 72
> 11:14:44.920621 IP6 fe80::caf9:f9ff:fe58:fb00.2029 > ff02::66.2029: UDP, length 72
> 11:14:45.500748 IP6 fe80::caf9:f9ff:fe58:fb00 > ff02::5: OSPFv3, Hello, length 36
> 
> ** container
> ~# tcpdump -i eth0 ip6
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
> 11:14:41.186126 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [S], seq 4010901551, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243609104 ecr 0], length 0
> 11:14:41.186181 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.31183: Flags [S.], seq 2044967707, ack 4010901552, win 28560, options [mss 1440,sackOK,TS val 182595146 ecr 3243609104,nop,wscale 7], length 0
> 11:14:41.334787 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 1, win 1026, options [nop,nop,TS val 3243609254 ecr 182595146], length 0
> 11:14:41.334936 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [F.], seq 1, ack 1, win 1026, options [nop,nop,TS val 3243609254 ecr 182595146], length 0
> 11:14:41.334965 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.31183: Flags [F.], seq 1, ack 2, win 224, options [nop,nop,TS val 182595183 ecr 3243609254], length 0
> 11:14:41.338129 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [S], seq 2137551393, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243609254 ecr 0], length 0
> 11:14:41.338177 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [S.], seq 2213057153, ack 2137551394, win 28560, options [mss 1440,sackOK,TS val 182595184 ecr 3243609254,nop,wscale 7], length 0
> 11:14:41.489387 IP6 2607:f2f8:a8e0::2.31183 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 2, win 1026, options [nop,nop,TS val 3243609406 ecr 182595183], length 0
> 11:14:41.497862 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 1, win 1026, options [nop,nop,TS val 3243609410 ecr 182595184], length 0
> 11:14:41.497940 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [P.], seq 1:68, ack 1, win 1026, options [nop,nop,TS val 3243609410 ecr 182595184], length 67: HTTP: GET / HTTP/1.0
> 11:14:41.497958 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [.], ack 68, win 224, options [nop,nop,TS val 182595224 ecr 3243609410], length 0
> 11:14:41.498071 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [P.], seq 1:2273, ack 68, win 224, options [nop,nop,TS val 182595224 ecr 3243609410], length 2272: HTTP: HTTP/1.1 301 Moved Permanently
> 11:14:41.498138 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [FP.], seq 2273:2451, ack 68, win 224, options [nop,nop,TS val 182595224 ecr 3243609410], length 178: HTTP
> 11:14:41.648538 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 2273, win 990, options [nop,nop,TS val 3243609567 ecr 182595224], length 0
> 11:14:41.648541 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [.], ack 2452, win 988, options [nop,nop,TS val 3243609567 ecr 182595224], length 0
> 11:14:41.696591 IP6 2607:f2f8:a8e0::2.22591 > 2001:41d0:1007:1c79::101.http: Flags [F.], seq 68, ack 2452, win 1026, options [nop,nop,TS val 3243609610 ecr 182595224], length 0
> 11:14:41.696623 IP6 2001:41d0:1007:1c79::101.http > 2607:f2f8:a8e0::2.22591: Flags [.], ack 69, win 224, options [nop,nop,TS val 182595274 ecr 3243609610], length 0
> 11:14:42.175090 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [S], seq 1761752329, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243610093 ecr 0], length 0
> 11:14:42.175120 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [S.], seq 477212830, ack 1761752330, win 28560, options [mss 1440,sackOK,TS val 182595393 ecr 3243610093,nop,wscale 7], length 0
> 11:14:42.325299 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 1, win 1026, options [nop,nop,TS val 3243610243 ecr 182595393], length 0
> 11:14:42.325437 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [P.], seq 1:518, ack 1, win 1026, options [nop,nop,TS val 3243610243 ecr 182595393], length 517
> 11:14:42.325458 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], ack 518, win 232, options [nop,nop,TS val 182595431 ecr 3243610243], length 0
> 11:14:42.333798 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 1:2857, ack 518, win 232, options [nop,nop,TS val 182595433 ecr 3243610243], length 2856
> 11:14:42.333820 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [P.], seq 2857:3449, ack 518, win 232, options [nop,nop,TS val 182595433 ecr 3243610243], length 592
> 11:14:42.483362 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 2857, win 981, options [nop,nop,TS val 3243610401 ecr 182595433], length 0
> 11:14:42.487600 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [P.], seq 518:676, ack 3449, win 1026, options [nop,nop,TS val 3243610401 ecr 182595433], length 158
> 11:14:42.488804 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [P.], seq 3449:3707, ack 676, win 240, options [nop,nop,TS val 182595472 ecr 3243610401], length 258
> 11:14:42.637441 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [P.], seq 676:775, ack 3707, win 1026, options [nop,nop,TS val 3243610555 ecr 182595472], length 99
> 11:14:42.675950 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], ack 775, win 240, options [nop,nop,TS val 182595519 ecr 3243610555], length 0
> 11:14:42.805930 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 3707:6563, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805956 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 6563:9419, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805962 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 9419:12275, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805971 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 12275:15131, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.805977 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 15131:17987, ack 775, win 240, options [nop,nop,TS val 182595551 ecr 3243610555], length 2856
> 11:14:42.955158 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 6563, win 1004, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:42.955209 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 17987:20843, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955217 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 20843:23699, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955161 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 9419, win 959, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:42.955230 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 23699:26555, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955235 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], seq 26555:29411, ack 775, win 240, options [nop,nop,TS val 182595588 ecr 3243610873], length 2856
> 11:14:42.955164 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 12275, win 1004, options [nop,nop,TS val 3243610873 ecr 182595551], length 0
> 11:14:43.103533 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 20843, win 981, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.103678 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 23699, win 937, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.104058 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 26555, win 892, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105642 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 29411, win 847, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105643 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 32267, win 803, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105644 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 35123, win 791, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105833 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 37979, win 747, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.105883 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 39229, win 727, options [nop,nop,TS val 3243611022 ecr 182595588], length 0
> 11:14:43.208484 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [.], ack 39229, win 1025, options [nop,nop,TS val 3243611120 ecr 182595588], length 0
> 11:14:43.220453 IP6 2607:f2f8:a8e0::2.22592 > 2001:41d0:1007:1c79::101.https: Flags [F.], seq 775, ack 39229, win 1026, options [nop,nop,TS val 3243611130 ecr 182595588], length 0
> 11:14:43.220490 IP6 2001:41d0:1007:1c79::101.https > 2607:f2f8:a8e0::2.22592: Flags [.], ack 776, win 240, options [nop,nop,TS val 182595655 ecr 3243611130], length 0
> 
> 
> * Port 80 on non-working ipv6 container (2001:41d0:1007:1c79::102)
> 
> ** host
> ~# tcpdump -i vmbr0 'ip6'
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on vmbr0, link-type EN10MB (Ethernet), capture size 262144 bytes
> 11:17:26.256927 IP6 fe80::caf9:f9ff:fe58:fb00 > ff02::5: OSPFv3, Hello, length 36
> 11:17:26.557307 IP6 fe80::caf9:f9ff:fe58:fb00.2029 > ff02::66.2029: UDP, length 72
> 11:17:29.002166 IP6 2607:f2f8:a8e0::2.35835 > 2001:41d0:1007:1c79::102.http: Flags [S], seq 2186876053, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243776920 ecr 0], length 0
> 11:17:31.021729 IP6 2607:f2f8:a8e0::2.35836 > 2001:41d0:1007:1c79::102.http: Flags [S], seq 27613106, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243778940 ecr 0], length 0
> 11:17:31.366822 IP6 fe80::6e50:4dff:feae:a900.2029 > ff02::66.2029: UDP, length 72
> 11:17:33.430904 IP6 2607:f2f8:a8e0::2.35838 > 2001:41d0:1007:1c79::102.https: Flags [S], seq 4010892160, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243781350 ecr 0], length 0
> 11:17:35.664950 IP6 fe80::caf9:f9ff:fe58:fb00 > ff02::5: OSPFv3, Hello, length 36
> 11:17:36.029938 IP6 2607:f2f8:a8e0::2.35840 > 2001:41d0:1007:1c79::102.https: Flags [S], seq 1369235300, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243783940 ecr 0], length 0
> 11:17:41.160933 IP6 fe80::caf9:f9ff:fe58:fb00.2029 > ff02::66.2029: UDP, length 72
> 
> ** container
> ~# tcpdump -i eth0 ip6
> tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth0, link-type EN10MB (Ethernet), capture size 262144 bytes
> 11:17:29.002199 IP6 2607:f2f8:a8e0::2.35835 > 2001:41d0:1007:1c79::102.http: Flags [S], seq 2186876053, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243776920 ecr 0], length 0
> 11:17:31.021757 IP6 2607:f2f8:a8e0::2.35836 > 2001:41d0:1007:1c79::102.http: Flags [S], seq 27613106, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243778940 ecr 0], length 0
> 11:17:33.430934 IP6 2607:f2f8:a8e0::2.35838 > 2001:41d0:1007:1c79::102.https: Flags [S], seq 4010892160, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243781350 ecr 0], length 0
> 11:17:36.029967 IP6 2607:f2f8:a8e0::2.35840 > 2001:41d0:1007:1c79::102.https: Flags [S], seq 1369235300, win 65535, options [mss 1440,nop,wscale 6,sackOK,TS val 3243783940 ecr 0], length 0