[Serusers] t_relay to local domain?

[serusers at jtoga.org]

Hi,

Not sure if this is simply a dumb thing to do or the configuration is 
wrong...  .8.14 SER is running mostly fine.

1) SER gets an invite to 123 at domain.com
2)  lookup() resolves this to 456 at domain.com

(serctl ul show 123 returns sip:456 at domain.com)

3) t_relay is called and eventually get a 408 and the URI indicates 
123 at domain.com

Logging has shown that the start of route logic is never called with 
456 at domain.com.  It seems like the t_relay() is internally sitting on the 
location URI. Is this intentional, to stop loops from occurring?  I realize 
that 'aliases' would better serve this but would like to understand what is 
occurring under the covers.

Thanks in advance.
Jim