RUTX50 RUTX_T_DEV_00.07.04.2110 IPv6 not forwarded

Teltonika Networks
1

Hello,
Ipv6 works fine from the router itself:

root@lgr5g:~# ping6 -c 1 2a00:1288:110:c305::1:8000
PING 2a00:1288:110:c305::1:8000 (2a00:1288:110:c305::1:8000): 56 data bytes
64 bytes from 2a00:1288:110:c305::1:8000: seq=0 ttl=53 time=58.981 ms

--- 2a00:1288:110:c305::1:8000 ping statistics ---
1 packets transmitted, 1 packets received, 0% packet loss
round-trip min/avg/max = 58.981/58.981/58.981 ms

but not from any other device on the lan:

[root@lgtsn]# ping6 -c 1 2a00:1288:110:c305::1:8000
PING 2a00:1288:110:c305::1:8000(2a00:1288:110:c305::1:8000) 56 data bytes

--- 2a00:1288:110:c305::1:8000 ping statistics ---
1 packets transmitted, 0 received, 100% packet loss, time 0ms

A tcpdump on the router shows:

root@lgr5g:~# tcpdump -i any -n -v 'icmp6 or host 2a00:1288:110:c305::1:8000'
tcpdump: data link type LINUX_SLL2
tcpdump: listening on any, link-type LINUX_SLL2 (Linux cooked v2), snapshot length 262144 bytes
12:58:28.768185 eth0  In  IP6 (flowlabel 0xf2fea, hlim 64, next-header ICMPv6 (58) payload length: 64) 2a0d:e487:41f:e334::262 > 2a00:1288:110:c305::1:8000: [icmp6 sum ok] ICMP6, echo request, id 5, seq 1
12:58:28.768185 br-lan In  IP6 (flowlabel 0xf2fea, hlim 64, next-header ICMPv6 (58) payload length: 64) 2a0d:e487:41f:e334::262 > 2a00:1288:110:c305::1:8000: [icmp6 sum ok] ICMP6, echo request, id 5, seq 1
12:58:28.768384 qmimux0 Out IP6 (flowlabel 0xf2fea, hlim 63, next-header ICMPv6 (58) payload length: 64) 2a0d:e487:41f:e334::262 > 2a00:1288:110:c305::1:8000: [icmp6 sum ok] ICMP6, echo request, id 5, seq 1
12:58:28.827705 qmimux0 In  IP6 (flowlabel 0xf2fea, hlim 52, next-header ICMPv6 (58) payload length: 64) 2a00:1288:110:c305::1:8000 > 2a0d:e487:41f:e334::262: [icmp6 sum ok] ICMP6, echo reply, id 5, seq 1
12:58:28.827861 qmimux0 Out IP6 (flowlabel 0xf2fea, hlim 51, next-header ICMPv6 (58) payload length: 64) 2a00:1288:110:c305::1:8000 > 2a0d:e487:41f:e334::262: [icmp6 sum ok] ICMP6, echo reply, id 5, seq 1

So the server replies, but the icmp echo reply isn’t forwarded from qmimux0 to br-lan.
There is nothing suspicious in the rules table, and stopping the firewall doesn’t help.
Any idea ?
Regards,

2

Hello,

The issue will be addressed in v7.5, and it should not be present in the public releases. It is test firmware-related.

Best regards,

1 Like
3

May I have an intermediate version with this bug fixed before the 7.5 version release ?
Regards,

5

Hello,

Unfortunately, we cannot provide testing firmware publically. Please downgrade to the latest public firmware or wait for the v7.5 release. Thank you for your help with the testing on the previous forum!

Best regards,

6

Ok thank you I have “downgraded” the firmware now running 07.04.4 and IPv6 works fine.
Regards,