inetd: only restart inetd services when neccessary

Do not restart a inetd service if the listening interface is changed.
Only bring down established connection which are no longer allowed,
i.e. do not touch already allowed established connections.

Signed-off-by: Jonas Johansson <jonasj76@gmail.com>

src/svc.h

@@ -109,6 +109,7 @@ typedef struct svc {
 	/* For inetd services */
 	inetd_t        inetd;
 	int            stdin_fd;
+	char           iifname[IF_NAMESIZE];  /* Ingress interface for connection */
 
 	/* Set for services we need to redirect stdout/stderr to syslog */
 	struct {