From: Simon Crowther (SCrowthe@msxi-euro.com)
Date: Fri Feb 21 2003 - 06:39:30 EST
Hi,
This one is bugging me...
I have a multi homed host, connected to three networks as follows,
13.14.116.0 255.255.252.0
13.14.233.0 255.255.255.0
193.129.65.208 255.255.255.240
Ifconfig output shows two of the broadcast addresses are wrong.
# ifconfig -a
lo0: flags=849<UP,LOOPBACK,RUNNING,MULTICAST> mtu 8232
inet 127.0.0.1 netmask ff000000
qfe0: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
inet 193.219.65.209 netmask ffffff00 broadcast 193.219.65.255
ether 8:0:20:e2:2b:74
qfe1: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
inet 13.14.116.29 netmask fffffc00 broadcast 13.14.119.255
ether 8:0:20:e2:2b:75
qfe2: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
inet 13.14.233.1 netmask ffffff00 broadcast 13.14.233.255
ether 8:0:20:e2:2b:76
/etc/host shows:
193.219.65.209 msxgbgw2 loghost
13.14.233.1 msxgbdmz-1
13.14.116.29 msxgbint
/etc/hostname.qfe0
msxgbgw2
/etc/hostname.qfe1
msxgbint
/etc/hostname.qfe2
msxgbdmz-1
I have checked how the server calls ifconfig at boot,
/etc/rc2.d/S72inetsvc shows
/usr/sbin/ifconfig -au netmask + broadcast +
So I would expect the broadcast address to be calculated based on the
netmask.
Does anyone know why the Broadcast addresses are wrong?
Cheers,
Simon
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