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Date: Fri, 24 Jun 2016 17:31:13 +0200
From: Michael Gmelin <freebsd@grem.de>
To: freebsd-net@freebsd.org
Subject: Re: ARP table entries / ifconfig needs to be issued twice when
 moving IP
Message-ID: <20160624173113.2744f8bc@bsd64.grem.de>
In-Reply-To: <20160621112538.784e7b6e@bsd64.grem.de>
References: <20160621064800.GB8441@box-hlm-03.niklaas.eu>
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An easier way to demonstrate the problem: When there is a temporary
entry in the arp table, it's only overwritten by the permanent entry
the second time ifconfig is called:

10.3-RELEASE / 10.2-RELEASE / 9.1-RELEASE:

[root@ ~]# ifconfig bge0 10.1.1.1/24
[root@ ~]# arp -s 10.1.1.2 14:18:77:00:00:00 temp
[root@ ~]# ifconfig bge0 alias 10.1.1.2/32
[root@ ~]# arp 10.1.1.2
? (10.1.1.2) at 14:18:77:00:00:00 on bge0 expires in 1178 seconds
[root@ ~]# # ifconfig bge0 alias 10.1.1.2/32
? (10.1.1.2) at 14:18:77:4d:10:61 on bge0 permanent [ethernet]

- Michael

-- 
Michael Gmelin