samples/pktgen: Trap SIGINT

Otherwise ^C stops the script, not just pktgen.

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/samples/pktgen/pktgen.conf-1-1-ip6 b/samples/pktgen/pktgen.conf-1-1-ip6
index e22199d..f161453 100755
--- a/samples/pktgen/pktgen.conf-1-1-ip6
+++ b/samples/pktgen/pktgen.conf-1-1-ip6
@@ -54,6 +54,7 @@
 PGDEV=/proc/net/pktgen/pgctrl
 
  echo "Running... ctrl^C to stop"
+ trap true INT
  pgset "start"
  echo "Done"