Date: Tue, 5 Jan 2021 21:49:18 +0700 From: Victor Sudakov <vas@sibptus.ru> To: Lutz Donnerhacke <lutz@donnerhacke.de> Cc: freebsd-net@freebsd.org Subject: Re: FreeBSD does not reply to IPv6 Neighbor Solicitations Message-ID: <20210105144918.GA14838@admin.sibptus.ru> In-Reply-To: <00b601d6e35a$115a4a20$340ede60$@donnerhacke.de> References: <mailman.93.1609761601.91504.freebsd-questions@freebsd.org> <E9644A2A-6C5F-48C9-AD2D-13BC7FB2E534@gromit.dlib.vt.edu> <20210105031528.GA91534@admin.sibptus.ru> <00a101d6e33b$96edf0c0$c4c9d240$@donnerhacke.de> <20210105104650.GA7688@admin.sibptus.ru> <00b601d6e35a$115a4a20$340ede60$@donnerhacke.de>
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--opJtzjQTFsWo+cga Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Lutz Donnerhacke wrote: > > > May you be able to capture the icmp6 traffic of this interface with > > > respect to ND? I'm really interested in seeing, that the box does > > > not respond to a given NS query. > >=20 > > Here you are http://admin.sibptus.ru/~vas/nd1.pcapng >=20 > The device, where the capture was taken does not respond to the NS packet. So your interpretation agrees with mine, that's great. > This might be caused by: > a) the device has a different configured IP address, than requested I have already published the output of `ifconfig re1`, here it is again, do you think anything important is missing? This is the very interface where the capture was taken: $ ifconfig re1 re1: flags=3D8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=3D8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,W= OL_MAGIC,LINKSTATE> ether c4:12:f5:33:c9:7c inet 192.168.170.5/24 broadcast 192.168.170.255 inet6 fe80::c612:f5ff:fe33:c97c%re1/64 scopeid 0x2 inet6 2001:470:ecba:3::5/64 media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=3D21<PERFORMNUD,AUTO_LINKLOCAL> $ > b) the network card does not listen to the multicast group, which is > used by the request=20 Why could that be? Hardware problem or software/FreeBSD glitch? > (you see it only due to the promisc mode of the > capture). But this is unlikely (due to the promisc mode) > c) your system is broken Very likely. That's why I'm here looking for advice and enlightenment. --=20 Victor Sudakov, VAS4-RIPE, VAS47-RIPN 2:5005/49@fidonet http://vas.tomsk.ru/ --opJtzjQTFsWo+cga Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEcBAEBAgAGBQJf9HxuAAoJEA2k8lmbXsY0QRcH/2EIH3qFXfZUzLY9Udy53LmT uRnwpNQVVhgHZG/RrPTXoqn/ecpza7E2rRGvv7VFmPcShZ7QTeEto8nW3hRmjkRf 1ex6QurJ9CYrD1hs8VSJv/Auim8owIRHFJEA1pCt5eOCRmwtvAN+vkDE+MlvPHN8 KKI/dvrtelQmV3sG+M4pY5zYhTW3t3UcX0S4xYwARFs0EFBqTLRNrApeoAVYAKhc q+EBZ0cC5kwmSNWESm17K8dkDAPW+cX1T31TbCOK2CsjTowhFtEJtyFLcGpx0dzt w0T4QnG4FUBaImj7LiaiUgXOcdXwPMJ7//ng4y2ZbFzuq/brO3EDoYgY7STFqPw= =mE77 -----END PGP SIGNATURE----- --opJtzjQTFsWo+cga--
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