[Pound Mailing List] Location comarision with backend address & host

Hi,
In pound 1.9 version, function "is_be" function in  file svc.c is written to find if a host is in our list of back-ends. Could anyone explain the need of such comparision of the location address with list of backend address and with to_host . What could be the effect in pound if this function is removed?
Comparision:-
if(memcmp(&to_host->sin_addr, &addr.sin_addr, sizeof(addr.sin_addr)) == 0
    && memcmp(&to_host->sin_port, &addr.sin_port, sizeof(addr.sin_port)) == 0)
    return 1;
    for(i = 0; i < grp->tot_pri; i++)
    if(memcmp(&grp->backend_addr[i].addr.sin_addr, &addr.sin_addr, sizeof(addr.sin_addr)) == 0
    && memcmp(&grp->backend_addr[i].addr.sin_port, &addr.sin_port, sizeof(addr.sin_port)) == 0)
    return 1;
    return 0;


Thanks
Raj Kishore
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