[asterisk-users] iax2 peer become UNREACHABLE

[Jonathan Unai Marquez]

Hi, I have 2 Asterisk connected over a VPN with iax2 and has been 
working perfectly for the last two weeks, but now, one of the boxes has 
decided stop seeing the other, so now I can only place calls on one 
direction:

bart*CLI> iax2 show peers
Name/Username    Host                 Mask             Port          Status
moe/bart         192.168.1.201   (S)  255.255.255.255  4569 (T)      
UNREACHABLE
1 iax2 peers [0 online, 1 offline, 0 unmonitored]


moe*CLI> iax2 show peers
Name/Username    Host                 Mask             Port          Status
bart/moe         192.168.2.201   (S)  255.255.255.255  4569 (T)      OK 
(43 ms)
1 iax2 peers [1 online, 0 offline, 0 unmonitored]

This is my iax.conf file:
[general]
bindport=4569
bindaddr=0.0.0.0
language=es
bandwidth=low
disallow=all
allow=gsm
allow=lpc10

[moe]
type=friend
host=192.168.1.201
context=extensions
username=bart
secret=secret
auth=plaintext
peercontext=extensions
qualify=yes
trunk=yes

The other:

[general]
bindport=4569
bindaddr=0.0.0.0
language=es
bandwidth=low
disallow=all
allow=gsm
allow=lpc10

[bart]
type=friend
host=192.168.2.201
context=extensions
peercontext=extensions
auth=plaintext
username=moe
secret=secret
qualify=yes
trunk=yes

I have restarted both Asterisk with no luck, any clues to where should I 
search for the soluton?

thanks,
Jonathan.