Stateless IPv6 address autoconfiguration not woring

Networking Solutions
1

TSW202 doesn’t forward IPv6 Multicast ff02::1 betwen ethernet ports.

This essential for ipv6 auto addressing! But not working with Teltonika.

The Product code is TSW20200XXXX with firmware version TSW2_R_00.01.06.3.

Reproduce

SFP1 Uplink with ra server

port2 PLC with stateless IPv6 address autoconfiguration

root@TSW202:~# tcpdump -n -i sfp1 icmp6 and ip6[40] == 134 and host ff02::1
12:40:35.835731 IP6 fe80::20d:b9ff:fe00:1 > ff02::1: ICMP6, router advertisement, length 168
12:41:48.547835 IP6 fe80::20d:b9ff:fe00:1 > ff02::1: ICMP6, router advertisement, length 168

root@TSW202:~# tcpdump -n -i br0 icmp6 and ip6[40] == 134 and host ff02::1
12:44:17.875027 IP6 fe80::20d:b9ff:fe00:1 > ff02::1: ICMP6, router advertisement, length 168
12:44:25.675613 IP6 fe80::20d:b9ff:fe00:1 > ff02::1: ICMP6, router advertisement, length 168

root@TSW202:~# tcpdump -n -i br0.1 icmp6 and ip6[40] == 134 and host ff02::1
12:45:43.533498 IP6 fe80::20d:b9ff:fe00:1 > ff02::1: ICMP6, router advertisement, length 168

root@TSW202:~# tcpdump -n -i port2 icmp6 and ip6[40] == 134 and host ff02::1
NULL

See also TSW202 doesen't forward IPv6 Multicast ff02::1

2

BTW in firmware update mode with switch ip 192.168.1.2 ip6 ff02::1 forwarding is working.

Workaround: bring the switch in fw update mode. :frowning:

3

after firmware update TSW2_R_00.01.07.1_WEBUI.bin same issue.

5

Hello,

Thank you for reaching out and bringing this issue to our attention. In this case, to investigate it effectively, we’ll need to continue this process privately, because sensitive/publicly unshareable information, such as the troubleshoot file, configurations, logs, etc., needs to be collected.

You should find a support request form in the inbox of the email address you used for your forum registration. Kindly fill out the form, and please reference Ticket ID: 15860 when submitting it. Once the form is completed, we’ll contact you directly via email to investigate the issue in detail and help work towards a solution.

Best regards,

6

Hello there, Just wondering if any progress has been made on this issue as I have come across a similar issue regarding Multicast IPv6.

Thanks and Regards,

David

7

Hi, any progress on the teltonika site? No?

That’s what I thought. That’s why I ported the model to openwrt 24.10.

tsw202 openwrt 24.10 Patch

8

Hello,

Apologies for not getting back to you sooner.

Regarding your reported IPv6 multicast issue, this was already a known issue that our R&D was aware of, and a fix is expected to be released with the upcoming TSWOS 1.8 firmware.

Thank you for your patience in the meantime. If you have any additional findings or questions, feel free to reach out.

Kind regards,

9

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