Date: Mon, 17 Nov 2008 13:40:55 -0800 From: Jo Rhett <jrhett@netconsonance.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-stable@freebsd.org Subject: Re: Possible regression in ifconfig under7.0 - removes valid default route Message-ID: <188BDB85-46C0-41AA-B270-DA03BBD4CFF2@netconsonance.com> In-Reply-To: <89DE4FDF67DC40AE88477897DF4CD0E7@multiplay.co.uk> References: <89DE4FDF67DC40AE88477897DF4CD0E7@multiplay.co.uk>
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This is a bug in my mind, but it's not a regression. FreeBSD has done this for at least 10 years now. If you are changing the IP of an interface, you *must* do a semicolon chained command to a route add default. It's been true for as long as I can remember. On Nov 17, 2008, at 11:11 AM, Steven Hartland wrote: > I believe there "may be" a regression in the behaviour of ifconfig or > possibly just something I've never experienced before. > > Basically when changing the IP of one of our machines, it suddenly > became inaccessible. After some investigation it turned out the > machine > was inaccessible from anything other than the local VLAN and continued > diagnostics determined that the process of changing the IP had also > removed the default route. > > This was clearly unexpected behaviour as the new IP was on the same > VLAN as the old IP and hence no routing table updates should be > required. > > I don't have any older machines to test this on but I believe we have > done this procedure in the past without any such issues so wanted to > raise it here to see if anyone else has had experience with it. > > Even if this isn't a regression it may well be something worth fixing > as its quite unexpected behaviour which could render a machine totally > inaccessible. > > Regards > Steve > > ================================================ > This e.mail is private and confidential between Multiplay (UK) Ltd. > and the person or entity to whom it is addressed. In the event of > misdirection, the recipient is prohibited from using, copying, > printing or otherwise disseminating it or any information contained > in it. > In the event of misdirection, illegible or incomplete transmission > please telephone +44 845 868 1337 > or return the E.mail to postmaster@multiplay.co.uk. > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org > " -- Jo Rhett Net Consonance : consonant endings by net philanthropy, open source and other randomness
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