Ifconfig (DHCP?) configures two IPs in one IF

Guojun Jin gjin at ubicom.com
Thu Aug 5 21:08:40 UTC 2010

"-alias" works, also "delete" works. 
The 'delete: cannot have "-" in front of it, otherwise, it gives an improper message;

# ifconfig rl0 -delete
ifconfig: -delete: bad value

This seems telling the is a bad value. It should say:
ifconfig: -delete -- bad option/switch

Now we know "-delete: itself is bad, not the value after it is bad.

-----Original Message-----
From: Alberto Mijares [mailto:amijaresp at gmail.com]
Sent: Thu 8/5/2010 12:24 PM
To: Guojun Jin
Cc: bug-followup at freebsd.org; questions at freebsd.org
Subject: Re: Ifconfig (DHCP?) configures two IPs in one IF
> rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
>        options=8<VLAN_MTU>
>        ether 00:40:f4:d1:23:9a
>        inet netmask 0xffffff00 broadcast
>        inet netmask 0xffffff00 broadcast
>        media: Ethernet autoselect (100baseTX <full-duplex>)
>        status: active
> plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
> I tried unplumb/delete rl0, but if does not  work.
> Before the bug can be fixed, is any way to fix the IP without rebooting the machine?

Try this

# ifconfig rl0 -alias


Alberto Mijares

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