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bird-users@network.cz

January 2021

21 participants
32 discussions

debian buster package signature problem
by Luitz Preßler 12 Jan '21

12 Jan '21

Hello, trying to do a test install of 2.0.7 on Debian buster (2.0.8 to be expected? :-), bird2 in buster backports repo?) I tried to use https://bird.network.cz/?download&tdir=debian/ http://bird.network.cz/debian/apt.key added as proposed, but signature errors for the repo on "apt-get update" Err:2 https://bird.network.cz/debian buster InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B188E2B695BD4743 ... Any idea? / Please correct, regards Lutz -- Lutz Preßler http://www.SerNet.de/ SerNet Service Network GmbH, Bahnhofsallee 1b, D-37081 Göttingen Tel.: +49-551-370000-0, FAX: +49-551-370000-9 AG Göttingen, HRB 2816, Gesch.F.: Dr. Johannes Loxen, Reinhild Jung

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Bird does not include next hop information in babel retractions, while babeld requires them
by Fabian Bläse 06 Jan '21

06 Jan '21

Hi, when using both bird and babeld in our babel network, babeld regularly complains about malformed packets. This happens when bird sends route retractions without including router-id and next-hop TLVs first. According to rfc6126 the router-id is not used for retractions. The resulting error message was an issue with babeld and has been fixed already [1]. However, babeld also does not like if retractions are not preceded by next-hop TLVs, which are indeed evaluated for retracting a route. Bird does not send next-hop TLVs for route retractions though [3] and ignores next-hop information, when processing received retractions itself [4][5]. I could not find any information which of these behaviours is correct. But other than for the router-id, the encoding description of Update TLVs (rfc6126, section 4.4.9) does not say that the next-hop address is ignored for retractions. Regards, Fabian [1] https://github.com/jech/babeld/issues/66 [3] https://gitlab.nic.cz/labs/bird/-/blob/master/proto/babel/packets.c#L720-731 [4] https://gitlab.nic.cz/labs/bird/-/blob/master/proto/babel/packets.c#L617-619 [5] https://gitlab.nic.cz/labs/bird/-/blob/master/proto/babel/babel.c#L1242-1243

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