Hi! config_setrelay>relay_privinit>relay_udp_privinit doesn't set env since env isn't set in relay.c yet, causing dns relay to SIGSEGV in relay_udp_server. Move setting env to relay_udp_init.
Rivo Index: usr.sbin/relayd/relay.c =================================================================== RCS file: /cvs/src/usr.sbin/relayd/relay.c,v retrieving revision 1.221 diff -u -p -r1.221 relay.c --- usr.sbin/relayd/relay.c 28 May 2017 10:39:15 -0000 1.221 +++ usr.sbin/relayd/relay.c 29 Jun 2017 20:58:08 -0000 @@ -285,7 +285,7 @@ relay_privinit(struct relay *rlay) switch (rlay->rl_proto->type) { case RELAY_PROTO_DNS: - relay_udp_privinit(env, rlay); + relay_udp_privinit(rlay); break; case RELAY_PROTO_TCP: break; @@ -445,7 +445,7 @@ relay_launch(void) switch (rlay->rl_proto->type) { case RELAY_PROTO_DNS: - relay_udp_init(rlay); + relay_udp_init(env, rlay); break; case RELAY_PROTO_TCP: case RELAY_PROTO_HTTP: Index: usr.sbin/relayd/relay_udp.c =================================================================== RCS file: /cvs/src/usr.sbin/relayd/relay_udp.c,v retrieving revision 1.46 diff -u -p -r1.46 relay_udp.c --- usr.sbin/relayd/relay_udp.c 28 May 2017 10:39:15 -0000 1.46 +++ usr.sbin/relayd/relay_udp.c 29 Jun 2017 20:58:08 -0000 @@ -58,20 +58,20 @@ void relay_dns_result(struct rsession int relay_dns_cmp(struct rsession *, struct rsession *); void -relay_udp_privinit(struct relayd *x_env, struct relay *rlay) +relay_udp_privinit(struct relay *rlay) { - if (env == NULL) - env = x_env; - if (rlay->rl_conf.flags & F_TLS) fatalx("tls over udp is not supported"); rlay->rl_conf.flags |= F_UDP; } void -relay_udp_init(struct relay *rlay) +relay_udp_init(struct relayd *x_env, struct relay *rlay) { struct protocol *proto = rlay->rl_proto; + + if (env == NULL) + env = x_env; switch (proto->type) { case RELAY_PROTO_DNS: Index: usr.sbin/relayd/relayd.h =================================================================== RCS file: /cvs/src/usr.sbin/relayd/relayd.h,v retrieving revision 1.240 diff -u -p -r1.240 relayd.h --- usr.sbin/relayd/relayd.h 27 May 2017 08:33:25 -0000 1.240 +++ usr.sbin/relayd/relayd.h 29 Jun 2017 20:58:08 -0000 @@ -1218,8 +1218,8 @@ int relay_httpdesc_init(struct ctl_rela ssize_t relay_http_time(time_t, char *, size_t); /* relay_udp.c */ -void relay_udp_privinit(struct relayd *, struct relay *); -void relay_udp_init(struct relay *); +void relay_udp_privinit(struct relay *); +void relay_udp_init(struct relayd *, struct relay *); int relay_udp_bind(struct sockaddr_storage *, in_port_t, struct protocol *); void relay_udp_server(int, short, void *);