Network unreachable inside jail, DNS resolution works fine.

[RalfR]

Hi everyone,

I'm not a FreeBSD / Linux pro but hope, you guys can help me resolve an issue I'm having with jails being unable to connect to the Internet.

I've been running my FreeNAS system for a while, having upgraded from FreeBSD 9.x via 10.x to 11.x. I've got a couple of jails (all from the FreeBSD 9 times) which work fine. Today, I created a new jail, based off the official 11.0 standard template here.

When I try to ping a host on the Internet, I do get a network unreachable error.

Below is some info which might help anybody here helping me. I noticed, that ifconfig does not report "status: active" for the epair2b interface – which it does for jails which I've created with earlier versions.

I hope somebody can help me getting this fixed. I love FreeNAS but this is sort of a bummer for me at this moment.


root@experimental:/ # host google.com
google.com has address 172.217.22.110
google.com has IPv6 address 2a00:1450:4001:81d::200e
google.com mail is handled by 20 alt1.aspmx.l.google.com.
google.com mail is handled by 50 alt4.aspmx.l.google.com.
google.com mail is handled by 30 alt2.aspmx.l.google.com.
google.com mail is handled by 40 alt3.aspmx.l.google.com.
google.com mail is handled by 10 aspmx.l.google.com.



root@experimental:/ # ping google.com
PING google.com (172.217.22.110): 56 data bytes
ping: sendto: Network is unreachable



root@experimental:/ # traceroute google.com
traceroute: findsaddr: failed to connect to peer for src addr selection.



root@experimental:/ # netstat -rn
Routing tables
(0) (0) U
(0) (0) UG
(0) (0) UH 13473
(0) (0) U
(0) (0) UHS 13473
(0) (0) U 13473
(0) (0) UHS 13473
(0) (0) U
(0) (0) UHS 13473



root@experimental:/ # ifconfig
lo0: flags=8048<LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
epair2b: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8<VLAN_MTU>
ether 4e:61:35:52:5b:18
inet 192.168.1.118 netmask 0xffffff00 broadcast 192.168.1.255
nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>


 

[RalfR]

Some more info from the logs:

Code:

Oct  6 10:50:22 rr-freenas epair2a: Ethernet address: 02:ff:e0:00:07:0a
Oct  6 10:50:22 rr-freenas epair2b: Ethernet address: 02:ff:30:00:08:0b
Oct  6 10:50:22 rr-freenas kernel: epair2a: link state changed to UP
Oct  6 10:50:22 rr-freenas kernel: epair2a: link state changed to UP
Oct  6 10:50:22 rr-freenas kernel: epair2b: link state changed to UP
Oct  6 10:50:22 rr-freenas kernel: epair2b: link state changed to UP
Oct  6 10:50:22 rr-freenas kernel: epair2a: promiscuous mode enabled

 

[dlavigne]

What is the output of netstat -rn from within an affected jail?