diff options
Diffstat (limited to 'lib/libc/rpc/get_myaddress.c')
| -rw-r--r-- | lib/libc/rpc/get_myaddress.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/lib/libc/rpc/get_myaddress.c b/lib/libc/rpc/get_myaddress.c index b0ac7da5ac6..48041537f6b 100644 --- a/lib/libc/rpc/get_myaddress.c +++ b/lib/libc/rpc/get_myaddress.c @@ -54,6 +54,9 @@ static char *rcsid = "$NetBSD: get_myaddress.c,v 1.3 1996/01/04 20:05:04 pk Exp /* * don't use gethostbyname, which would invoke yellow pages + * + * Avoid loopback interfaces. We return information from a loopback + * interface only if there are no other possible interfaces. */ int get_myaddress(addr) @@ -64,6 +67,7 @@ get_myaddress(addr) struct ifconf ifc; struct ifreq ifreq, *ifr; int len, slop; + int loopback = 0, gotit = 0; if ((s = socket(AF_INET, SOCK_DGRAM, 0)) < 0) { return (-1); @@ -74,6 +78,7 @@ get_myaddress(addr) (void) close(s); return (-1); } +again: ifr = ifc.ifc_req; for (len = ifc.ifc_len; len; len -= sizeof ifreq) { ifreq = *ifr; @@ -82,9 +87,11 @@ get_myaddress(addr) return (-1); } if ((ifreq.ifr_flags & IFF_UP) && - ifr->ifr_addr.sa_family == AF_INET) { + ifr->ifr_addr.sa_family == AF_INET && + (loopback == 1 && (ifreq.ifr_flags & IFF_LOOPBACK))) { *addr = *((struct sockaddr_in *)&ifr->ifr_addr); addr->sin_port = htons(PMAPPORT); + gotit = 1; break; } /* @@ -97,6 +104,10 @@ get_myaddress(addr) } ifr++; } + if (gotit == 0 && loopback == 0) { + loopback = 1; + goto again; + } (void) close(s); return (0); } |