Date: Wed, 13 Mar 2024 21:09:32 +0800 From: Zhenlei Huang <zlei@FreeBSD.org> To: Benoit Chesneau <benoitc@enki-multimedia.eu> Cc: "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org>, Alexander Chernikov <melifaro@freebsd.org> Subject: Re: ipv4 route with ipv6 local link nexthop ? Message-ID: <764E12BF-5D31-4905-98AE-6D745BFD1DC2@FreeBSD.org> In-Reply-To: <367504DC-48DA-4DFD-9DB6-CC571F0D26B8@FreeBSD.org> References: <Kj1GA9KKe3wVoeEJr0g-4BAiin5cEjGj4ICYDH9LHBT_vpmctoN-2HNS7AjTwNimOVkn5nBoJw50fbLgNdCleBD0p_TZImOet1gFGIfr4-E=@enki-multimedia.eu> <367504DC-48DA-4DFD-9DB6-CC571F0D26B8@FreeBSD.org>
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[-- Attachment #1 --] > On Mar 13, 2024, at 12:19 PM, Zhenlei Huang <zlei@FreeBSD.org> wrote: > > > >> On Mar 13, 2024, at 4:36 AM, Benoit Chesneau <benoitc@enki-multimedia.eu <mailto:benoitc@enki-multimedia.eu>> wrote: >> >> On latest freebsd 14.0 release , I am trying to join an ipv4 address over an IPV6 local link using the following command : >> >> `route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200` >> >> But I get the following error: >> >> ``` >> route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200 >> add net 10.200.1.1: gateway fe80::9439:36ff:fef0:7cbd%vlan200 fib 0: Invalid argument > > I guess that is regression by transition of route(8) to NETLINK. > > Can you please build sbin/route from source without NETLINK and give it another try ? > > ``` > # cd /usr/src/sbin/route > # setenv MK_NETLINK_SUPPORT no > # make > ``` Hi Benoit, I managed to repeat this bug. As a workaround, add an IPv4 address to the outgoing interface (vlan200 in your case), ``` # ifconfig vlan200 inet x.x.x.x/y ``` then retry adding the route ``` # route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200 ``` > >> ``` >> >> ping6 to `fe80::9439:36ff:fef0:7cbd%vlan200` works. What I am doing wrong? Configuration of the interface is the following: >> >> ``` >> vlan200: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500 >> options=4600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG> >> ether fe:d9:dd:2d:35:c5 >> inet6 fe80::fcd9:ddff:fe2d:35c5%vlan200 prefixlen 64 scopeid 0x5 >> groups: vlan >> vlan: 200 vlanproto: 802.1q vlanpcp: 0 parent interface: iavf0 >> media: Ethernet autoselect (10Gbase-SR <full-duplex>) >> status: active >> nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL >> ``` >> >> >> >> Benoît > > Best regards, > Zhenlei [-- Attachment #2 --] <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Mar 13, 2024, at 12:19 PM, Zhenlei Huang <<a href="mailto:zlei@FreeBSD.org" class="">zlei@FreeBSD.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta charset="UTF-8" class=""><div style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br class="Apple-interchange-newline"><br class=""><blockquote type="cite" class=""><div class="">On Mar 13, 2024, at 4:36 AM, Benoit Chesneau <<a href="mailto:benoitc@enki-multimedia.eu" class="">benoitc@enki-multimedia.eu</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="" style="font-family: Arial, sans-serif; font-size: 14px;">On latest freebsd 14.0 release , I am trying to join an ipv4 address over an IPV6 local link using the following command :</div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><br class=""></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class="">`route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200`</span><br class=""></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class=""><br class=""></span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class="">But I get the following error:</span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class=""><br class=""></span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class="">route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200</span><br class=""><span class="">add net 10.200.1.1: gateway fe80::9439:36ff:fef0:7cbd%vlan200 fib 0: Invalid argument</span><br class=""></div></div></blockquote><div class=""><br class=""></div><div class="">I guess that is regression by transition of route(8) to NETLINK.</div></div></div></blockquote><blockquote type="cite" class=""><div class=""><div style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><div class=""><br class=""></div><div class="">Can you please build sbin/route from source without NETLINK and give it another try ?</div><div class=""><br class=""></div><div class="">```</div><div class=""># cd /usr/src/sbin/route</div><div class=""># setenv MK_NETLINK_SUPPORT no</div><div class=""># make</div><div class="">```</div></div></div></blockquote><div><br class=""></div><div>Hi Benoit,</div><div><br class=""></div><div>I managed to repeat this bug.</div><div><br class=""></div><div><div>As a workaround, add an IPv4 address to the outgoing interface (vlan200 in your case),</div><div>```</div><div># ifconfig vlan200 inet x.x.x.x/y</div><div>```</div><div><br class=""></div><div>then retry adding the route</div><div>```</div><div># route add -net 10.200.1.1/32 -inet6 fe80::9439:36ff:fef0:7cbd%vlan200</div><div>```</div><div class=""><br class=""></div></div><blockquote type="cite" class=""><div class=""><div style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><br class=""><blockquote type="cite" class=""><div class=""><div class="" style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><br class=""></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;">ping6 to `<span class="" style="text-decoration: none; background-color: rgb(255, 255, 255); display: inline !important;">fe80::9439:36ff:fef0:7cbd%vlan200` works. What I am doing wrong? Configuration of the interface is the following:</span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class="" style="text-decoration: none; background-color: rgb(255, 255, 255); display: inline !important;"><br class=""></span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class="">vlan200: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500</span><div class=""><span class=""> options=4600703<RXCSUM,TXCSUM,TSO4,TSO6,LRO,RXCSUM_IPV6,TXCSUM_IPV6,MEXTPG></span></div><div class=""><span class=""> ether fe:d9:dd:2d:35:c5</span></div><div class=""><span class=""> inet6 fe80::fcd9:ddff:fe2d:35c5%vlan200 prefixlen 64 scopeid 0x5</span></div><div class=""><span class=""> groups: vlan</span></div><div class=""><span class=""> vlan: 200 vlanproto: 802.1q vlanpcp: 0 parent interface: iavf0</span></div><div class=""><span class=""> media: Ethernet autoselect (10Gbase-SR <full-duplex>)</span></div><div class=""><span class=""> status: active</span></div><span class=""> nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL</span><br class=""></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class=""><br class=""></span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><span class=""><br class=""></span></div><div class="" style="font-family: Arial, sans-serif; font-size: 14px;"><br class=""></div><div class="protonmail_signature_block" style="font-family: Arial, sans-serif; font-size: 14px;"><div class="protonmail_signature_block-user"><div class="" style="font-style: normal; font-weight: normal; letter-spacing: normal; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; text-decoration: none; font-family: Helvetica; font-size: 12px;">Benoît </div></div></div></div></blockquote></div><br class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 13px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div class="">Best regards,</div><div class="">Zhenlei</div></div></div></blockquote></div><br class=""><div class=""> <div><br class=""></div> </div> <br class=""></body></html>
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