Re: DHCPDv6 in non-vnet jail
- Reply: Ronald Klop : "Re: DHCPDv6 in non-vnet jail"
- In reply to: Ronald Klop : "Re: DHCPDv6 in non-vnet jail"
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Date: Tue, 29 Mar 2022 16:11:05 UTC
On Tue, Mar 29, 2022 at 12:14:20PM +0200, Ronald Klop wrote: > I think it will help if you share more of your configuration/logs. Inside non-vnet jail, this is ifconfig output cbsd0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 description: lagg0 ether 58:9c:fc:10:9b:75 inet 172.16.0.253 netmask 0xffffffff broadcast 172.16.0.253 inet6 fd10:6c79:8ae5:8b91::2 prefixlen 128 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: epair1a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 7 priority 128 path cost 2000 member: epair5a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 11 priority 128 path cost 2000 member: epair4a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 10 priority 128 path cost 2000 member: epair3a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 9 priority 128 path cost 2000 member: epair2a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 8 priority 128 path cost 2000 groups: bridge nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> There are bunch of other interfaces, but only cbsd0 (bridge interface) is set up with ip address. netstat -rn Routing tables Internet: Destination Gateway Flags Netif Expire 172.16.0.253 link#4 UH cbsd0 Internet6: Destination Gateway Flags Netif Expire fd10:6c79:8ae5:8b91::2 link#4 UHS lo0 grep -v '^#' /usr/local/etc/dhcpd6.conf default-lease-time 2592000; preferred-lifetime 604800; option dhcp-renewal-time 3600; option dhcp-rebinding-time 7200; allow leasequery; option dhcp6.name-servers 3ffe:501:ffff:100:200:ff:fe00:3f3e; option dhcp6.domain-search "test.example.com","example.com"; option dhcp6.info-refresh-time 21600; dhcpv6-lease-file-name "/var/db/dhcpd6/dhcpd6.leases"; subnet6 fd10:6c79:8ae5:8b91::/64 { range6 fd10:6c79:8ae5:8b91::/64; } ls -l /dev total 1 crw------- 1 root wheel 0x26 Mar 29 17:35 bpf lrwxr-xr-x 1 root wheel 3 Mar 28 09:31 bpf0 -> bpf crw-rw-rw- 1 root wheel 0x4a Mar 26 15:54 crypto dr-xr-xr-x 2 root wheel 512 Mar 29 03:38 fd crw-rw-rw- 1 root wheel 0x2a Mar 29 18:00 null crw-rw---- 1 root nsd 0x1a5 Mar 24 23:45 pf crw-rw---- 1 root nsd 0x4b Mar 26 15:54 pfil dr-xr-xr-x 2 root wheel 512 Mar 28 09:31 pts crw-r--r-- 1 root wheel 0x8 Mar 24 23:45 random lrwxr-xr-x 1 root wheel 4 Mar 28 09:31 stderr -> fd/2 lrwxr-xr-x 1 root wheel 4 Mar 28 09:31 stdin -> fd/0 lrwxr-xr-x 1 root wheel 4 Mar 28 09:31 stdout -> fd/1 lrwxr-xr-x 1 root wheel 6 Mar 28 09:31 urandom -> random crw-rw-rw- 1 root wheel 0x2b Mar 26 15:54 zero On the host I have /etc/rtadvd.conf: cbsd0:addr="fd10:6c79:8ae5:8b91::":raflags="m" On the host ifconfig cbsd0 cbsd0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 description: lagg0 ether 58:9c:fc:10:9b:75 inet 172.16.0.254 netmask 0xffffff00 broadcast 172.16.0.255 inet 172.16.1.254 netmask 0xffffff00 broadcast 172.16.1.255 inet 172.16.0.253 netmask 0xffffffff broadcast 172.16.0.253 inet6 fe80::5a9c:fcff:fe10:9b75%cbsd0 prefixlen 64 scopeid 0x4 inet6 fd10:6c79:8ae5:8b91::1 prefixlen 64 inet6 fd10:6c79:8ae5:8b91::2 prefixlen 128 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: epair1a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 7 priority 128 path cost 2000 member: epair5a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 11 priority 128 path cost 2000 member: epair4a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 10 priority 128 path cost 2000 member: epair3a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 9 priority 128 path cost 2000 member: epair2a flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 8 priority 128 path cost 2000 groups: bridge nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> > Besides you can take a look with tcpdump/wireshark on what happens on different interfaces of your machines to see the traffic flow between client and server. Running tcpdump -i cbsd0 ip6 inside the non-vnet: tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on cbsd0, link-type EN10MB (Ethernet), capture size 262144 bytes 18:02:29.081325 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 18:02:51.229813 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:02:52.338420 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:02:54.444709 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:02:58.449268 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:02:59.083071 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 18:03:06.545104 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:03:12.355503 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 18:03:22.890933 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:03:29.084154 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 18:03:54.837662 IP6 fe80::2a0:98ff:fe7d:cad.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 18:03:59.081342 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 18:04:29.083992 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 18:04:41.028190 IP6 fe80::5a9c:fcff:fe10:9b75.10482 > ff12::8384.21027: UDP, length 322 That happens while I'm running dhcp6c -d -f eth0 inside vnet jail (eth0 is epair that is renamed): Mar/29/2022 18:02:50: failed to open /usr/local/etc/dhcp6cctlkey: No such file or directory Mar/29/2022 18:02:50: failed initialize control message authentication Mar/29/2022 18:02:50: skip opening control port Mar/29/2022 18:02:50: cfparse: fopen(/usr/local/etc/dhcp6c.conf): No such file or directory Mar/29/2022 18:02:51: Sending Solicit Mar/29/2022 18:02:52: Sending Solicit Mar/29/2022 18:02:54: Sending Solicit Mar/29/2022 18:02:58: Sending Solicit Mar/29/2022 18:03:06: Sending Solicit Mar/29/2022 18:03:22: Sending Solicit Mar/29/2022 18:03:54: Sending Solicit Can I provide any more info? Regards, meka