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Date:      Thu, 29 Oct 2015 11:42:40 -0500
From:      Eric van Gyzen <eric@vangyzen.net>
To:        Bryan Drewery <bdrewery@FreeBSD.org>, current@FreeBSD.org
Subject:   Re: r288951: ifconfig -alias, arp not removed
Message-ID:  <56324C80.8000408@vangyzen.net>
In-Reply-To: <5632485F.5080203@FreeBSD.org>
References:  <5632485F.5080203@FreeBSD.org>

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On 10/29/2015 11:25, Bryan Drewery wrote:
> # ifconfig
> igb0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
> 
> options=403bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,TSO6,VLAN_HWTSO>
>         ether c8:0a:a9:04:39:78
>         inet 10.10.0.7 netmask 0xffff0000 broadcast 10.10.255.255
>         inet 10.10.7.2 netmask 0xffff0000 broadcast 10.10.255.255
>         inet 10.10.0.9 netmask 0xffff0000 broadcast 10.10.255.255
>         nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
>         media: Ethernet autoselect (1000baseT <full-duplex>)
>         status: active
> 
> # ifconfig igb0 inet 10.10.0.9 -alias
> # arp -an|grep 10.10.0.9
> ? (10.10.0.9) at c8:0a:a9:04:39:78 on igb0 permanent [ethernet]
> # arp -d 10.10.0.9
> arp: writing to routing socket: Operation not permitted
> 
> I swear this is not normal. I'm on an older build as well, r288951.

That definitely looks abnormal.  See what "route get" says.  I think
that's the error you get when there is a route for that address.

Eric



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