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22.1 Legacy Series / Re: Gateway offline after upgrade to 22.1.5
« on: May 04, 2022, 04:43:11 pm »
Last update for me on this topic;
Disabling IPv6 is the workaround which is a poor fix for this issue.
I got yet another LTE modem and after analysing the the traffic with TCP dump I gave up on trying to solve why it fails it just fails. If both IPv4 and IPv6 are enabled on WAN, the interface accepts only IPv6 address from DHCP and discards offered IPv4 address.
Disabling IPv6 is the workaround which is a poor fix for this issue.
I got yet another LTE modem and after analysing the the traffic with TCP dump I gave up on trying to solve why it fails it just fails. If both IPv4 and IPv6 are enabled on WAN, the interface accepts only IPv6 address from DHCP and discards offered IPv4 address.