From: Florian Westphal <f...@strlen.de> Date: Sun, 5 Jul 2020 01:30:14 +0200
> restarting an mptcp-patched sshd yields following error: > > sshd: error: Bind to port 22 on 0.0.0.0 failed: Address already in use. > sshd: error: setsockopt IPV6_V6ONLY: Operation not supported > sshd: error: Bind to port 22 on :: failed: Address already in use. > sshd: fatal: Cannot bind any address. > > This series adds support for the needed setsockopts: > > First patch skips the generic SOL_SOCKET handler for MPTCP: > in mptcp case, the setsockopt needs to alter the tcp socket, not the mptcp > parent socket. > > Second patch adds minimal SOL_SOCKET support: REUSEPORT and REUSEADDR. > Rest is still handled by the generic SOL_SOCKET code. > > Last patch adds IPV6ONLY support. This makes ipv6 work for openssh: > It creates two listening sockets, before this patch, binding the ipv6 > socket will fail because the port is already bound by the ipv4 one. Series applied, thanks Florian.
