[PATCH 4.15 34/72] l2tp: fix races with ipv4-mapped ipv6 addresses

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Paolo Abeni commit b954f94023dcc61388c8384f0f14eb8e42c863c5 upstream. The l2tp_tunnel_create() function checks for v4mapped ipv6 sockets and cache that flag, so that l2tp

[PATCH 4.15 34/72] l2tp: fix races with ipv4-mapped ipv6 addresses

4.15-stable review patch. If anyone has any objections, please let me know. -- From: Paolo Abeni commit b954f94023dcc61388c8384f0f14eb8e42c863c5 upstream. The l2tp_tunnel_create() function checks for v4mapped ipv6 sockets and cache that flag, so that l2tp core code can