Allow dhcpcd to run on loopback interfaces if specified.

2 files changed, 11 insertions, 8 deletions

diff --git a/if-linux.c b/if-linux.c
index ad58e2a9..d3bb88e8 100644
--- a/if-linux.c
+++ b/if-linux.c
@@ -561,6 +561,14 @@ discover_interfaces(int argc, char * const *argv)
 					continue;
 			}
 			if ((ifp = init_interface(p))) {
+				/* Don't allow loopback unless explicit */
+				if (ifp->flags & IFF_LOOPBACK &&
+				    argc == 0 &&
+				    ifdc == 0)
+				{
+					free_interface(ifp);
+					continue;
+				}
 				if (ifl)
 					ifl->next = ifp; 
 				else
diff --git a/net.c b/net.c
index bfe1fd35..eb94db2f 100644
--- a/net.c
+++ b/net.c
@@ -215,16 +215,11 @@ init_interface(const char *ifname)
 		iface->hwlen = INFINIBAND_ADDR_LEN;
 		break;
 	default:
-		/* Don't needlessly spam console on startup */
-		if (!(options & DHCPCD_MASTER &&
-			!(options & DHCPCD_DAEMONISED) &&
-			options & DHCPCD_QUIET))
-			syslog(LOG_ERR, "%s: unsupported media family",
-			    iface->name);
-		goto eexit;
+		iface->hwlen = 0;
 	}
-	memcpy(iface->hwaddr, ifr.ifr_hwaddr.sa_data, iface->hwlen);
 	iface->family = ifr.ifr_hwaddr.sa_family;
+	if (iface->hwlen != 0)
+		memcpy(iface->hwaddr, ifr.ifr_hwaddr.sa_data, iface->hwlen);
 #endif
 
 	if (ioctl(s, SIOCGIFMTU, &ifr) == -1)