High Speed Syslog using pools in a specific Route Domain

what module are you referring to? this is what i understand.

For AFM, device-config DOS and L7 DOS (DOS profile) can use non-default route domain for hsl logging.  

For PSM (prior to 11.6), ASM (WAF) must use default route domain for hsl logging but we can create additional virtual server (in default route domain) to send hsl log to pool member in non-default route domain.