[Serusers] Weird Error Message

[Andrei Pelinescu-Onciul]

On Nov 13, 2003 at 18:15, Andres <andres at telesip.net> wrote:
> Today we tried to install a Grandstream phone at a cutomer site but were 
> unable to make it work.  We have about 40 of these phones (all configured by 
> US in the exact same way) and all working fine.  But upon plugging this 
> phone, SER started generating this message constantly in the log file:
> 
> 
> Nov 13 16:53:14 maui /usr/local/sbin/ser[5066]: ERROR: 
> udp_rcv_loop:recvfrom:[11] Resource temporarily unavailable
> Nov 13 16:53:16 maui /usr/local/sbin/ser[5068]: ERROR: 
> udp_rcv_loop:recvfrom:[11] Resource temporarily unavailable
> Nov 13 16:53:19 maui /usr/local/sbin/ser[5065]: ERROR: 
> udp_rcv_loop:recvfrom:[11] Resource temporarily unavailable

This error (EAGAIN) appears also when and udp packet with bad checksum
is received. In this case the linux kernel will return EAGAIN. I think
this is the case for you. Probably your "new" phone is placed before a
very bad link which corrupts the packet (or you have a bad firewall).

[...]
> 
> Can anybody tell me what could be the cause of this error?  Or if anybody 
> wants to look at the ETHEREAL trace I can sent it directly (its about 1MB).

Send it to me (and also tell me the ip addresses of the guilty phone and
of ser).

Andrei