Date: Mon, 02 Oct 2023 09:21:52 +0000 From: Benoit Chesneau <benoitc@enki-multimedia.eu> To: "freebsd-net@FreeBSD.org" <freebsd-net@freebsd.org> Subject: ipv6 only host and no IPV4 in jail? Message-ID: <t1d4CimLo2K345CiV8mGDaQrW5KW1Kz335yZOtRdu-XGYjY7m2zHVkxBOSxxLXavsgCVxWSVVO1JXNQ9F294ywF7MWuGh0L6HrYbKKvB2rA=@enki-multimedia.eu>
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[-- Attachment #1 --] Hi all, I have a weird issue there, I have an ipv6 only host aon which I am starting a jail.Jalil have a vnet interface through a bridge created on the host: For some reason the jail can't get access and is not accessible to internet when I setup an IPV4 on it (and right gateway). Is this something expected? SHould the Host be also IPV4 aware? Host config: Host: ``` vlan200bridge: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000 ether 58:9c:fc:10:fc:41 id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: e0a_bastille4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 8 priority 128 path cost 2000 member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 9 priority 128 path cost 2000000 member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 10 priority 128 path cost 2000000 member: vlan200 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 6 priority 128 path cost 800 groups: bridge e0a_bastille4: flags=8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 9000 description: vnet host interface for Bastille jail fpcouchdb options=8<VLAN_MTU> ether 02:20:9c:4c:84:f0 hwaddr 02:c4:b5:3a:91:0a groups: epair media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> ``` Guest ``` # ifconfig vnet0 vnet0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=8<VLAN_MTU> ether 0e:20:9c:4c:84:f0 hwaddr 02:c4:b5:3a:91:0b inet6 XXXX:XXXX:XXXX:200::30 prefixlen 64 inet6 fe80::c20:9cff:fe4c:84f0%vnet0 prefixlen 64 scopeid 0x2 inet 10.200.1.8 netmask 0xffffff00 broadcast 10.200.1.255 groups: epair media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>) status: active nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> # netstat -rn4 Routing tables Internet: Destination Gateway Flags Netif Expire default 10.200.1.1 UGS vnet0 10.200.1.0/24 link#2 U vnet0 10.200.1.8 link#2 UHS lo0127.0.0.1 link#1 UH lo0 ``` Benoît Chesneau, Enki Multimedia — t. +33608655490 Sent with [Proton Mail](https://proton.me/) secure email. [-- Attachment #2 --] <div style="font-family: Arial, sans-serif; font-size: 14px;">Hi all, </div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">I have a weird issue there,</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">I have an ipv6 only host aon which I am starting a jail.Jalil have a vnet interface through a bridge created on the host:</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">For some reason the jail can't get access and is not accessible to internet when I setup an IPV4 on it (and right gateway). Is this something expected? SHould the Host be also IPV4 aware?</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">Host config:</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">Host:</div><div style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><span>vlan200bridge: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 9000</span><div><span> ether 58:9c:fc:10:fc:41</span></div><div><span> id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15</span></div><div><span> maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200</span></div><div><span> root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0</span></div><div><span> member: e0a_bastille4 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP></span></div><div><span> ifmaxaddr 0 port 8 priority 128 path cost 2000</span></div><div><span> member: tap0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP></span></div><div><span> ifmaxaddr 0 port 9 priority 128 path cost 2000000</span></div><div><span> member: tap1 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP></span></div><div><span> ifmaxaddr 0 port 10 priority 128 path cost 2000000</span></div><div><span> member: vlan200 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP></span></div><div><span> ifmaxaddr 0 port 6 priority 128 path cost 800</span></div><span> groups: bridge</span><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;"><span><br></span></div><div style="font-family: Arial, sans-serif; font-size: 14px;"><span><span>e0a_bastille4: flags=8963<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 9000</span><div><span> description: vnet host interface for Bastille jail fpcouchdb</span></div><div><span> options=8<VLAN_MTU></span></div><div><span> ether 02:20:9c:4c:84:f0</span></div><div><span> hwaddr 02:c4:b5:3a:91:0a</span></div><div><span> groups: epair</span></div><div><span> media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)</span></div><div><span> status: active</span></div><span> nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL></span></span></div><div style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">Guest</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><span># ifconfig vnet0</span><div><span>vnet0: flags=8863<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500</span></div><div><span> options=8<VLAN_MTU></span></div><div><span> ether 0e:20:9c:4c:84:f0</span></div><div><span> hwaddr 02:c4:b5:3a:91:0b</span></div><div><span> inet6 XXXX:XXXX:XXXX:200::30 prefixlen 64</span></div><div><span> inet6 fe80::c20:9cff:fe4c:84f0%vnet0 prefixlen 64 scopeid 0x2</span></div><div><span> inet 10.200.1.8 netmask 0xffffff00 broadcast 10.200.1.255</span></div><div><span> groups: epair</span></div><div><span> media: Ethernet 10Gbase-T (10Gbase-T <full-duplex>)</span></div><div><span> status: active</span></div><span> nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL></span><br></div><div style="font-family: Arial, sans-serif; font-size: 14px;"><span><span><span># netstat -rn4</span><div><span>Routing tables</span></div><div><br></div><div><span>Internet:</span></div><div><span>Destination Gateway Flags Netif Expire</span></div><div><span>default 10.200.1.1 UGS vnet0</span></div><div><span>10.200.1.0/24 link#2 U vnet0</span></div><div><span>10.200.1.8 link#2 UHS lo0</span></div><span>127.0.0.1 link#1 UH lo0</span><br></span></span></div><div style="font-family: Arial, sans-serif; font-size: 14px;">```</div><div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div> <div class="protonmail_signature_block" style="font-family: Arial, sans-serif; font-size: 14px;"> <div class="protonmail_signature_block-user"> <div 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; color: rgb(0, 0, 0);">Benoît Chesneau, Enki Multimedia<br></div><div 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; color: rgb(0, 0, 0);">—<br></div><div 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; color: rgb(0, 0, 0);">t. +33608655490 <br></div> </div> <div style="font-family: Arial, sans-serif; font-size: 14px;"><br></div> <div class="protonmail_signature_block-proton"> Sent with <a target="_blank" href="https://proton.me/" rel="noopener noreferrer">Proton Mail</a> secure email. </div> </div>
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