628abf8f25
With these changes IPv6 works on the rp2 port (and possibly others that use the lwIP socket implementation). Things that have been tested and work: - Neighbour solicitation for v6 link local address. - Ping of v6 link-local address. - Receiving a SLAAC address via router advertisement. - Ping a v6 address allocated via SLAAC. - Perform an outgoing connection to a routed v6-address (via default gateway). - Create a listening IPv6 wildcard socked bound to ::, and trying to access it via link-local, SLAAC, and IPv4 (to ensure the dual-stack binding works). Things that could be improved: - socket.socket().getaddrinfo only returns the v4 address. It could also return v6 addresses (getaddrinfo is actively programmed to only return a single address, and this is the v4-address by default, with fallback to the v6 address if both are enabled). Signed-off-by: Felix Dörre <felix@dogcraft.de>