Date: Wed, 17 May 2017 10:45:25 +0300 From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: William Gathoye <william@gathoye.be>, freebsd-net@freebsd.org Subject: Re: Public IPv6s fail on KVM bridge with "No buffer space available" Message-ID: <84cecdc7-e331-d3bc-3fb3-e35507e231d6@yandex.ru> In-Reply-To: <fbfe1ff2-bd66-9a98-d56b-6d75265936bd@gathoye.be> References: <fbfe1ff2-bd66-9a98-d56b-6d75265936bd@gathoye.be>
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This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --BO3lnaN8vO57KVejrGSdlmIo1kMbb5TV3 Content-Type: multipart/mixed; boundary="HDBwRCJIjLwvXC9jLAsogtpRJmqaiiF4A"; protected-headers="v1" From: "Andrey V. Elsukov" <bu7cher@yandex.ru> To: William Gathoye <william@gathoye.be>, freebsd-net@freebsd.org Message-ID: <84cecdc7-e331-d3bc-3fb3-e35507e231d6@yandex.ru> Subject: Re: Public IPv6s fail on KVM bridge with "No buffer space available" References: <fbfe1ff2-bd66-9a98-d56b-6d75265936bd@gathoye.be> In-Reply-To: <fbfe1ff2-bd66-9a98-d56b-6d75265936bd@gathoye.be> --HDBwRCJIjLwvXC9jLAsogtpRJmqaiiF4A Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 17.05.2017 00:24, William Gathoye wrote: > Contrary to the other LXC/KVM, the latter cannot ping any IPv6 machines= > outside those accessible directly from the bridge. As soon I try to pin= g > either the gateway of my hypervisor (still in IPv6), or any other far > away IPv6 hosts (e.g. google.com), I got the following error message: >=20 > [...] > ping6: sendmsg: No buffer space available > [...] >=20 > ifconfig vtnet0 inet6 <ipv6> prefixlen 64 > route add -inet6 <gw ipv6> -iface vtnet0 > route add -inet6 default <gw ipv6> >=20 > Please note all my GWs are outside of my IP subnets. FreeBSD's IPv6 NDP implementation can not find GWs layer 2 address, since its IPv6 address is not considered as neighbor. You need to configure IPv6 address on the vtnet0 interface from the same prefix as GWs address. Or use link-local addresses. --=20 WBR, Andrey V. Elsukov --HDBwRCJIjLwvXC9jLAsogtpRJmqaiiF4A-- --BO3lnaN8vO57KVejrGSdlmIo1kMbb5TV3 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQEzBAEBCAAdFiEE5lkeG0HaFRbwybwAAcXqBBDIoXoFAlkb/5UACgkQAcXqBBDI oXpvRggAutV+ymmlI802IX9idw4VveDb28H3lP/zs2HBnrCk/bPV9l8gFkfMbzQ7 nwfkHvBa0HgGNg8vE362rORi+ObFmNXbBv/4HoDlZW7pdiSJwUVW261WPFl0FMhe aazbDF81CsJS++qeqXGtuyRwqCG2znELuk9KQk3JbC05aknzVm9D2l1dKFPWSaZa ffjxXwoftPo4oV37nAWfHw+szaz7Hn+PGsRZxYp+37zFQ61Sf9bKwrKhL25OUb0I DQ82npb5HXaXN5KPWyPGH2hCBl1XLiAE/fYPYtKIgNtUC3LDNOqQ2LgtrQGu3W6A R6YdVuxSIQT02a9HILnyAtrAXAWgGA== =4mgq -----END PGP SIGNATURE----- --BO3lnaN8vO57KVejrGSdlmIo1kMbb5TV3--
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