Subject: Re: kern/10631: lo0 aliases don't work anymore
To: Michael Graff <>
From: Andrew Brown <>
List: netbsd-bugs
Date: 07/19/2000 14:54:03
>In 1.4.x, adding a lo0 alias using
>	ifconfig lo0 netmask 0xffffffff alias
>would add another address to a machine, using the loopback interface.
>>From the outside, this alias is pingable from fxp0, which has address
>Now, in 1.4ZD through 1.5_ALPHA (perhaps earlier) the machine will not
>respond to ARP requests for lo0 aliases.

i think it's as simple as adding an arp entry (with the keyword pub)
for the ip address so that the machine will advertise itself.

     arp -s hostname ether_addr [temp] [pub]

fwiw - i always put the aliases on a physical interface, not lo0, but
that requires me to specifically enter a route to that address through
127.1 so that i can get there from here.

looks like two steps either way.

|-----< "CODE WARRIOR" >-----|             * "ah!  i see you have the internet (Andrew Brown)                that goes *ping*!"       * "information is power -- share the wealth."