Problem: Bind8.1.2/Irix/Ip-aliasing

[Jacob Weismann Poulsen]

Hi,

  I might have discoved a minor problem with Bind8.1.2 on Irix. I would 
be most grateful for comments on this. The problem is reported below:

Problem-description
-------------------
  A host with two ip-addresses for a single interface. Bind
version 8.1.2 running on platform X must answer on both ip-addresses.

Success
-------
- Linux (redhat 5.2) and Bind8.1.2 
- Solaris2.6 and Bind8.1.2
- AIX and Bind8.2.1
- Irix6.5 and Bind4.7.5

Failures
--------
-Irix6.4 (Bind8.1.2)
-Irix6.5 (Bind8.1.2)

Summary of the Irix configuration:

IP-Alias: ifconfig ef0 alias 130.226.65.216 netmask 0xfffffc00
origin 189# ifconfig ef0
ef0: flags=1c63<UP,BROADCAST,NOTRAILERS,RUNNING,FILTMULTI,MULTICAST,CKSUM>
        inet 130.226.64.166 netmask 0xfffffc00 broadcast 130.226.67.255
        inet 130.226.65.216 netmask 0xfffffc00 broadcast 130.226.67.255

Detailed description of the problem

There are no problems with the right IP-address but the alias IP doesn't
work. I can see that datagrams are dropped due to no socket. A netstat -I
ef0 -p udp shows that this number increases when a client tries to connect
to the server on the alias IP address. I have tried to specify the
IP-addresses that Bind should listen on by using the option listen on port
53 { ... }, but it doesn't change anything. The log (grep named
/var/adm/SYSLOG) never shows the alias IP-address.

Thanks in advance,

Jacob Weismann