diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c index 1e578982fce..36cffc97980 100644 --- a/sys/compat/linux/linux_socket.c +++ b/sys/compat/linux/linux_socket.c @@ -501,6 +501,11 @@ linux_to_bsd_ip6_sockopt(int opt) "unsupported IPv6 socket option IPV6_RECVFRAGSIZE (%d)", opt); return (-2); + case LINUX_IPV6_RECVERR: + LINUX_RATELIMIT_MSG_OPT1( + "unsupported IPv6 socket option IPV6_RECVERR (%d), you can not get extended reliability info in linux programs", + opt); + return (-2); /* unknown sockopts */ default: @@ -2112,6 +2117,14 @@ linux_setsockopt(struct thread *td, struct linux_setsockopt_args *args) name = linux_to_bsd_ip_sockopt(args->optname); break; case IPPROTO_IPV6: + if (args->optname == LINUX_IPV6_RECVERR && + linux_ignore_ip_recverr) { + /* + * XXX: This is a hack to unbreak DNS resolution + * with glibc 2.30 and above. + */ + return (0); + } name = linux_to_bsd_ip6_sockopt(args->optname); break; case IPPROTO_TCP: