nic_router: do not route to domains w/o IP config

Ref #2534
2017-12-04 18:31:05 +01:00 · 2017-12-04 18:31:05 +01:00 · b8d8bc3142
parent fb2398dbf2
commit b8d8bc3142
1 changed files with 3 additions and 0 deletions
--- a/repos/os/src/server/nic_router/interface.cc
+++ b/repos/os/src/server/nic_router/interface.cc
@ -272,6 +272,9 @@ void Interface::_adapt_eth(Ethernet_frame          &eth,
                           Packet_descriptor const &pkt,
                           Interface               &interface)
 {
+	if (!interface.domain().ip_config().valid) {
+		throw Packet_ignored("target domain has yet no IP config");
+	}
 	Ipv4_address const &hop_ip = interface._domain.next_hop(ip);
 	try { eth.dst(interface._arp_cache.find_by_ip(hop_ip).mac()); }
 	catch (Arp_cache::No_match) {