Description: DHCP replies containing MTUs of 576 and lower indicate the
             DHCP server is misconfigured.  To handle these pathological
             setting, only MTUs above 576 are processed.  (See dhcp3
             LP bug 274069.)
Ubuntu: https://launchpad.net/bugs/352779

Index: network-manager-0.7.1~rc4/src/dhcp-manager/nm-dhcp-manager.c
===================================================================
--- network-manager-0.7.1~rc4.orig/src/dhcp-manager/nm-dhcp-manager.c	2009-04-07 11:44:29.000000000 -0700
+++ network-manager-0.7.1~rc4/src/dhcp-manager/nm-dhcp-manager.c	2009-04-07 11:45:07.000000000 -0700
@@ -917,7 +917,7 @@
 		if ((errno == EINVAL) || (errno == ERANGE))
 			goto error;
 
-		if (int_mtu)
+		if (int_mtu > 576)
 			nm_ip4_config_set_mtu (ip4_config, int_mtu);
 	}