I'm not an expert but i had same issue while using 6.1 as a guest os on a kvm. I updated to 6.2 and problem vanished.
On Tue, 1 May 2018, 09:07 Tom Smyth, <tom.sm...@wirelessconnect.eu> wrote: > Hello, > > I have encountered this issue for a while, it happens irregularly > on my systems on this lan > basically when the issue occurs > I cant route out the interface with the default route on it, > I cant ping the gateway > I cant see the arp of the gateway > but i can see the routes installed in the routing table > > > are there other commands I should be looking at to debug it more > Im using > > ifconfig > arp > route > > when i run run sh /etc/netstart em0 > then normal operation returns > > The only (unusual network config) im using is that im deploying > more specific static routes (than the connected route) to allow > clients on a non broadcast network to route to each other > ie if a client wants to talk to another client send packet to default > gateway > (icmp redirects are off on the gateway) > > the output of ping and arp when it happens are as follows > # ping 5.134.92.1 > PING 5.134.92.1 (5.134.92.1): 56 data bytes > ping: sendto: No route to host > ping: wrote 5.134.92.1 64 chars, ret=-1 > ping: sendto: No route to host > ping: wrote 5.134.92.1 64 chars, ret=-1 > ping: sendto: No route to host > ping: wrote 5.134.92.1 64 chars, ret=-1 > --- 5.134.92.1 ping statistics --- > 3 packets transmitted, 0 packets received, 100.0% packet loss > > #ifconfig em0 > em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > lladdr 00:0d:b9:46:33:50 > index 1 priority 0 llprio 3 > groups: egress > media: Ethernet autoselect (100baseTX full-duplex) > status: active > inet 5.134.92.142 netmask 0xfffffc00 broadcast 5.134.95.255 > > > > > > below is an output of the routing table when it is not working > > # route -n -T0 show > Routing tables > > Internet: > Destination Gateway Flags Refs Use Mtu Prio > Iface > default 5.134.92.1 UGS 2 78893 - 8 em0 > 224/4 127.0.0.1 URS 0 609 32768 8 lo0 > 5.134.92/22 5.134.92.142 UC 0 0 - 4 em0 > 5.134.92/23 5.134.92.1 UGS 0 80897 - 8 em0 > 5.134.94/23 5.134.92.1 UGS 0 396 - 8 em0 > 5.134.92.142 00:0d:b9:46:33:50 UHLl 0 52 - 1 em0 > 5.134.95.255 5.134.92.142 UHb 0 0 - 1 em0 > 127/8 127.0.0.1 UGRS 0 0 32768 8 lo0 > 127.0.0.1 127.0.0.1 UHl 1 6 32768 1 lo0 > 185.55.204/23 5.134.92.1 UGS 0 24 - 8 em0 > 185.55.206/23 5.134.92.1 UGS 0 21 - 8 em0 > > Internet6: > Destination Gateway > Flags Refs Use Mtu Prio Iface > ::/96 ::1 UGRS > 0 0 32768 8 lo0 > ::/104 ::1 UGRS > 0 0 32768 8 lo0 > ::1 ::1 UHl > 14 14 32768 1 lo0 > ::127.0.0.0/104 ::1 UGRS > 0 0 32768 8 lo0 > ::224.0.0.0/100 ::1 UGRS > 0 0 32768 8 lo0 > ::255.0.0.0/104 ::1 UGRS > 0 0 32768 8 lo0 > ::ffff:0.0.0.0/96 ::1 UGRS > 0 0 32768 8 lo0 > 2002::/24 ::1 UGRS > 0 0 32768 8 lo0 > 2002:7f00::/24 ::1 UGRS > 0 0 32768 8 lo0 > 2002:e000::/20 ::1 UGRS > 0 0 32768 8 lo0 > 2002:ff00::/24 ::1 UGRS > 0 0 32768 8 lo0 > fe80::/10 ::1 UGRS > 0 0 32768 8 lo0 > fec0::/10 ::1 UGRS > 0 0 32768 8 lo0 > fe80::1%lo0 fe80::1%lo0 UHl > 0 0 32768 1 lo0 > ff01::/16 ::1 UGRS > 21 21 32768 8 lo0 > ff01::%lo0/32 ::1 Um > 0 1 32768 4 lo0 > ff02::/16 ::1 UGRS > 21 21 32768 8 lo0 > ff02::%lo0/32 ::1 Um > 0 1 32768 4 lo0 > > > > --------------------------------------------- > --------------------------------------------- > > below is the output of the routing table when it is working > # route -n -T0 show > Routing tables > > Internet: > Destination Gateway Flags Refs Use Mtu Prio > Iface > default 5.134.92.1 UGS 5 51573 - 8 em0 > 224/4 127.0.0.1 URS 0 1060 32768 8 lo0 > 5.134.92/22 5.134.92.142 UC 1 0 - 4 em0 > 5.134.92/23 5.134.92.1 UGS 0 116 - 8 em0 > 5.134.94/23 5.134.92.1 UGS 0 51 - 8 em0 > 5.134.92.1 de:10:0d:96:90:34 UHLc 5 180 - 4 em0 > 5.134.92.142 00:0d:b9:46:33:50 UHLl 0 80378 - 1 em0 > 5.134.95.255 5.134.92.142 UHb 0 0 - 1 em0 > 127/8 127.0.0.1 UGRS 0 0 32768 8 lo0 > 127.0.0.1 127.0.0.1 UHl 1 6 32768 1 lo0 > 185.55.204/23 5.134.92.1 UGS 0 12 - 8 em0 > 185.55.206/23 5.134.92.1 UGS 0 6 - 8 em0 > > Internet6: > Destination Gateway > Flags Refs Use Mtu Prio Iface > ::/96 ::1 UGRS > 0 0 32768 8 lo0 > ::/104 ::1 UGRS > 0 0 32768 8 lo0 > ::1 ::1 UHl > 14 14 32768 1 lo0 > ::127.0.0.0/104 ::1 UGRS > 0 0 32768 8 lo0 > ::224.0.0.0/100 ::1 UGRS > 0 0 32768 8 lo0 > ::255.0.0.0/104 ::1 UGRS > 0 0 32768 8 lo0 > ::ffff:0.0.0.0/96 ::1 UGRS > 0 0 32768 8 lo0 > 2002::/24 ::1 UGRS > 0 0 32768 8 lo0 > 2002:7f00::/24 ::1 UGRS > 0 0 32768 8 lo0 > 2002:e000::/20 ::1 UGRS > 0 0 32768 8 lo0 > 2002:ff00::/24 ::1 UGRS > 0 0 32768 8 lo0 > fe80::/10 ::1 UGRS > 0 0 32768 8 lo0 > fec0::/10 ::1 UGRS > 0 0 32768 8 lo0 > fe80::1%lo0 fe80::1%lo0 UHl > 0 0 32768 1 lo0 > ff01::/16 ::1 UGRS > 21 21 32768 8 lo0 > ff01::%lo0/32 ::1 Um > 0 1 32768 4 lo0 > ff02::/16 ::1 UGRS > 21 21 32768 8 lo0 > ff02::%lo0/32 ::1 Um > 0 1 32768 4 lo0 > > > em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 > lladdr 00:0d:b9:46:33:50 > index 1 priority 0 llprio 3 > groups: egress > media: Ethernet autoselect (100baseTX full-duplex) > status: active > inet 5.134.92.142 netmask 0xfffffc00 broadcast 5.134.95.255 > > > > ---------------------------------------------------------------------------------- > > ---------------------------------------------------------------------------------- > > >
