Jeff Frost <jeff(at)frostconsultingllc(dot)com> writes:
> I believe you must list all 4 octets of the subnet.
Oh, duh. The comments in inet_aton() show that it is interpreting
"10.6" in what most people nowadays would find a surprising way:
case 1: /* a -- 32 bits */
case 2: /* a.b -- 8.24 bits */
case 3: /* a.b.c -- 8.8.16 bits */
case 4: /* a.b.c.d -- 8.8.8.8 bits */
ie, it is read as if it were "10.0.0.6" ... hence no match, but also no
syntax error.
regards, tom lane