Test for locally configured IP addresses by trying to bind nc to it. Thanks to Thomas Steen Rasmussen and #bsdports

2012-01-14 20:55:27 +00:00 · 2012-01-14 20:55:27 +00:00 · 3095bd5900
commit 3095bd5900
parent cea94f977d
1 changed files with 1 additions and 1 deletions
--- a/2
+++ b/2
@ -708,7 +708,7 @@ EOF
  TIFS=${IFS}; IFS=,
  for ezjail_ip in ${ezjail_ips}; do
    # check, whether IP is configured on a local interface, warn if it isnt
-    ping -c 1 -m 1 -t 1 -q ${ezjail_ip} > /dev/null
+    nc -n -s ${ezjail_ip} -u -w 0 127.0.0.1 1 2> /dev/null
    [ $? -eq 0 ] || echo "Warning: IP ${ezjail_ip} not configured on a local interface."

    # check, whether some host system services do listen on the Jails IP