Date: Mon, 9 May 2005 00:42:51 +0300 From: Giorgos Keramidas <keramida@linux.gr> To: Michael Bretterklieber <mbretter@inode.at> Cc: freebsd-net@freebsd.org Subject: Re: Multiple Interfaces with the same IP Message-ID: <20050508214251.GC2150@gothmog.gr> In-Reply-To: <427E4ADD.70104@inode.at> References: <427E443B.9070301@inode.at> <200505081903.09631.max@love2party.net> <427E4ADD.70104@inode.at>
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On 2005-05-08 19:22, Michael Bretterklieber <mbretter@inode.at> wrote: >Max Laier wrote: >>On Sunday 08 May 2005 18:54, Michael Bretterklieber wrote: >>> it looks like that under 5-stable it's allowed to have different >>> interfaces with the same IP, bug or feature? >> >> Feature and required for CARP to function. You need to change your >> routeing > > ok, this make sense. > >> table to make sure the right one is used for outgoing traffic (or you >> just don't set the same IP on more than one interface). > > sure, but in my case the Iface is configured with Mpd. I'm trying to > catch that case, where a user with a static-IP (provided by the RADIUS > server) was logged in twice. I tried to catch the return value from > ifconfig, but since it's allowed to have multiple ifaces with the same > ip, ifconfig succeeds. > > ... so, it looks like I have to find another way :-( Does the following help? gothmog:/home/giorgos$ ifconfig -a | grep -q 127.0.0.1 ; echo $? 0 gothmog:/home/giorgos$ ifconfig -a | grep -q 127.0.0.2 ; echo $? 1
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