In the referenced message, JothirLatha Jaganathan said: > > Can any one tell me if the last byte of a point to > point or loopback ipaddress with 32 bit mask can be 0 > or 255? > > For e.g.: > > Is 10.1.1.0/32 a valid interace address? Yes, it is valid, as is 10.1.1.0/31, for ptp links.