Date: Mon, 22 May 2017 14:13:18 +0200 From: Alarig Le Lay <alarig@swordarmor.fr> To: William Gathoye <william@gathoye.be> Cc: "Andrey V. Elsukov" <bu7cher@yandex.ru>, freebsd-net@freebsd.org Subject: Re: Public IPv6s fail on KVM bridge with "No buffer space available" Message-ID: <20170522121318.2pzqt5ryisrl44rn@mew.swordarmor.fr> In-Reply-To: <a44fa8c5-d48f-25eb-51d2-16d100ba5f53@gathoye.be> References: <fbfe1ff2-bd66-9a98-d56b-6d75265936bd@gathoye.be> <84cecdc7-e331-d3bc-3fb3-e35507e231d6@yandex.ru> <a44fa8c5-d48f-25eb-51d2-16d100ba5f53@gathoye.be>
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[-- Attachment #1 --] On lun. 22 mai 14:03:54 2017, William Gathoye wrote: > Btw, if I wanted to use link local addresses to communicate with the > provider next hop gateway, how can I know the local link fe80 IPv6 > address of that gateway since my provider (OVH) doesn't disclose it? You can try to ping6 the IPv6 multicast address for all the routers on the link: 14:07 alarig@mew ~ % ping6 -c1 ff02::2%vtnet0 PING6(56=40+8+8 bytes) fe80::a800:ff:fe93:83a3%vtnet0 --> ff02::2%vtnet0 16 bytes from fe80::209%vtnet0, icmp_seq=0 hlim=64 time=0.237 ms --- ff02::2%vtnet0 ping6 statistics --- 1 packets transmitted, 1 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 0.237/0.237/0.237/0.000 ms But, it’s possible that you don’t get any reply if they do some nasty things on their network (as Hetzner does). In that case, you’re stuck on the /56 setup. -- alarig [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEE+2yGwT0H0n57WkRbrzhKwWsgK4gFAlki1dsACgkQrzhKwWsg K4j5fwgAgMXzefkvOwdPJYejyjET3bR/VLEa2iX0PCn8f5iSAPr0xCoIwJNWlcXv fLKny43qsf42lVFu5H4FkSOYIWB5/03mu4xjmk6xDdpy+TLB2Q4Iae0ySt0ZlNmG COzh5o2RxuHf+QvAFHeCYWP4Ve1m/k35wzUuPbmzW3xktf13/py7/S1/x3wdT7Zq MekdkamHSoSk5QKtZGEBlh5bmA/ikhey8LkaPKjGv0IVyQH0obn8TGCLQCpt8HJE 1M6P+PasvBRndZXVJh/5Gb/6BQedtzItzLGThvkDtKQA55jdWLnJdJRLsFjzPHju 7kEmWEVYn0M/GGJYCksMqZgf5aXwGQ== =1hsK -----END PGP SIGNATURE-----
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