enable autodetection of interfaces in groups

If the given interface on the command line is a group, all interfaces
in this group (that are up) are monitored. While you are using this
mechanism, you will never any warnings of down interfaces unless you
explicit specify the interface on the command line.

1 files changed, 4 insertions, 4 deletions

diff --git a/net_if b/net_if
index e7825ec..8d6f71d 100755
--- a/net_if
+++ b/net_if
@@ -39,12 +39,12 @@ sub get_if_status {
         }
 
         while (<IFCONFIG>) {
-            if ($_ =~ m/^$if: flags=([0-9]+)</) {
-                if ($1 & 1) {
-                    push(@up, $if);
+            if ($_ =~ m/^([-a-v0-9]+): flags=([0-9]+)</) {
+                if ($2 & 1) {
+                    push(@up, $1);
                 }
                 else {
-                    push (@down, $if);
+                    push (@down, $if) if $1 eq $if;
                 }
             }
         }