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    IPv6 problem, periodic loss of packets

    Scheduled Pinned Locked Moved IPv6
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    • I
      ivanoff
      last edited by

      Hello everyone!

      I'm quite new to IPv6 and I'm fighting problems for a few days, but no progress.

      IPv6 net is obtained through he.net and it seems to work fine from Pfsense router. The problems start when I'm trying to ping any IPv6 address from LAN (even router interface itself).

      Pfsense version: 2.3.2-RELEASE

      Ping:

      Pinging google.com [2a00:1450:400c:c04::66] with 32 bytes of data:
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=22ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Request timed out.
      Request timed out.
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Request timed out.
      Reply from 2a00:1450:400c:c04::66: time=469ms
      Reply from 2a00:1450:400c:c04::66: time=22ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=22ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Request timed out.
      Request timed out.
      Request timed out.
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=22ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Request timed out.
      Request timed out.
      Request timed out.
      Request timed out.
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Request timed out.
      Request timed out.
      Request timed out.
      Request timed out.
      Request timed out.
      Request timed out.
      Reply from 2a00:1450:400c:c04::66: time=26ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=21ms
      Reply from 2a00:1450:400c:c04::66: time=20ms
      Request timed out.
      
      Ping statistics for 2a00:1450:400c:c04::66:
          Packets: Sent = 50, Received = 33, Lost = 17 (34% loss),
      Approximate round trip times in milli-seconds:
          Minimum = 20ms, Maximum = 469ms, Average = 34ms
      

      Packet capture on LAN interface:

      00:13:51.837274 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3045, length 40
      00:13:51.837418 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3045, length 40
      00:13:52.855286 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3046, length 40
      00:13:52.855351 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3046, length 40
      00:13:53.887508 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3047, length 40
      00:13:53.887577 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3047, length 40
      00:13:54.932242 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3048, length 40
      00:13:54.932313 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3048, length 40
      00:13:55.401273 IP6 2001:470:aaaa:835::ffff > 2001:470:aaaa:835::1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:13:55.962765 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3049, length 40
      00:13:55.962819 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3049, length 40
      00:13:56.401282 IP6 2001:470:aaaa:835::ffff > 2001:470:aaaa:835::1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:13:57.004219 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3050, length 40
      00:13:57.004274 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3050, length 40
      00:13:57.401276 IP6 2001:470:aaaa:835::ffff > 2001:470:aaaa:835::1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:13:58.041028 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3051, length 40
      00:13:58.041082 IP6 2001:470:bbbb::ffff > 2001:470:aaaa:835::1: ICMP6, echo reply, seq 3051, length 40
      00:13:59.071966 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3052, length 40
      00:13:59.072067 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:00.071262 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:01.105261 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:03.782346 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1: ICMP6, router advertisement, length 144
      00:14:03.924850 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3053, length 40
      00:14:03.924954 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:04.924265 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:05.924275 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:08.915867 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3054, length 40
      00:14:08.915971 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:09.915266 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:09.975338 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1: ICMP6, router advertisement, length 144
      00:14:10.915271 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:13.922606 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3055, length 40
      00:14:13.922704 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:14.922269 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:15.922282 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:18.920506 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3056, length 40
      00:14:18.920603 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:19.010121 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1: ICMP6, router advertisement, length 144
      00:14:19.920260 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:20.920264 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:23.923451 IP6 2001:470:aaaa:835::1 > 2001:470:bbbb::ffff: ICMP6, echo request, seq 3057, length 40
      00:14:23.923552 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:24.923266 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:25.923280 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1:ff00:1: ICMP6, neighbor solicitation, who has 2001:470:aaaa:835::1, length 32
      00:14:26.504368 IP6 fe80::92fb:a6ff:feca:ac8c > ff02::1: ICMP6, router advertisement, length 144
      
      

      As far as I can see the router stops to respond to pings after "ICMP6, neighbor solicitation" requests with no response.

      Any ideas?

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