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.smyth@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
>
>
>
> ----------------------------------------------------------------------------------
>
> ----------------------------------------------------------------------------------
>
>
>
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