IP_ALIAS bug in 2.2.x

From: Cougar (cougar@random.ee)
Date: Thu May 25 2000 - 08:41:04 EST

Hi,

What is the reason of removeing alias interface after shutting it down. In
2.0.x (tested with 2.0.38) kernel it was possible to set it up again

root# ifconfig eth0:1 1.2.3.4 -broadcast
root# ifconfig eth0:1 down
root# ifconfig eth0:1 up

In 2.2.x (tested with 2.2.12, 2.2.14, 2.2.15) it doesn't work

root# ifconfig eth0:1 1.2.3.4 -broadcast
root# ifconfig eth0:1 down
root# ifconfig eth0:1 up
SIOCSIFFLAGS: Cannot assign requested address

But that's not a problem.. The real problem is here

root# ifconfig eth0:1 1.2.3.4 -broadcast
root# ifconfig eth0:2 1.2.3.5 -broadcast
root# ifconfig eth0:3 1.2.3.6 -broadcast
root# ifconfig eth0:1 down
root# ifconfig
root# ifconfig eth0:2 down
SIOCSIFFLAGS: Cannot assign requested address
root# ifconfig eth0:3 down
SIOCSIFFLAGS: Cannot assign requested address

And you see that eth0:2 and eth0:3 as well are disappeared after
shutting down eth0:1. Trying set eth0:3 or eth0:2 to down state if
eth0:1 is up, works fine. After shut down the alias created at first, all
other aliases disappear also. This is bug.. 

---
Cougar

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