diff options
| -rw-r--r-- | networking/nslookup.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/networking/nslookup.c b/networking/nslookup.c index f4fd407..dd4b1ff 100644 --- a/networking/nslookup.c +++ b/networking/nslookup.c @@ -138,6 +138,9 @@ static void set_default_dns(const char *server) { len_and_sockaddr *lsa; + if (!server) + return; + /* NB: this works even with, say, "[::1]:5353"! :) */ lsa = xhost2sockaddr(server, 53); @@ -181,9 +184,17 @@ int nslookup_main(int argc, char **argv) /* (but it also says "may be enabled in /etc/resolv.conf") */ /*_res.options |= RES_USE_INET6;*/ - if (argv[2]) - set_default_dns(argv[2]); + set_default_dns(argv[2]); server_print(); + + /* getaddrinfo and friends are free to request a resolver + * reinitialization. Just in case, set_default_dns() again + * after getaddrinfo (in server_print). This reportedly helps + * with bug 675 "nslookup does not properly use second argument" + * at least on Debian Wheezy and Openwrt AA (eglibc based). + */ + set_default_dns(argv[2]); + return print_host(argv[1], "Name:"); } |