I got curious about what "passthrough" might be doing and found this assertion [0], which reminded me of the existence of '6relayd' [1]. So I assume that that m

I got curious about what "passthrough" might be doing and found this assertion [0], which reminded me of the existence of '6relayd' [1]. So I assume that that mode relays the RAs & etc, but replaces the link-local address in the RA & etc with that of the relaying interface. [0] <https://www.snbforums.com/threads/ipv6-passthrough-disadvantages.81668/#post-800033 https://www.snbforums.com/threads/ipv6-passthrough-disadvant...> [1] <https://github.com/Yamatohimemiya/6relayd https://github.com/Yamatohimemiya/6relayd>