1 files changed, 2 insertions, 1 deletions
diff --git a/src/libexec/sockip.c b/src/libexec/sockip.c
index 542a88d..f1f0480 100644
--- a/src/libexec/sockip.c
+++ b/src/libexec/sockip.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <sys/socket.h>
 #include <netdb.h>
 #include <netinet/in.h>
@@ -7,7 +8,7 @@ int main(int argc,char *argv[]) {
  struct sockaddr_in6 sa6;
  unsigned int sl=sizeof(sa6);
  char h[NI_MAXHOST], s[NI_MAXSERV];
- if(getsockname(0,(struct sockaddr *)&sa6,&sl) == -1) return 1;
+ if(getsockname(argc>1?atoi(argv[1]):0,(struct sockaddr *)&sa6,&sl) == -1) return 1;
  if(getnameinfo((struct sockaddr *)&sa6,sl,h,sizeof(h),s,sizeof(s),NI_NUMERICHOST|NI_NUMERICSERV)) return 2;
  puts(h);
  puts(s);