Bug 245148
| Summary: | ifconfig(8) tunnel destination not respecting CLI specified address_family | ||||||
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| Product: | Base System | Reporter: | Jason Unovitch <junovitch> | ||||
| Component: | bin | Assignee: | freebsd-net (Nobody) <net> | ||||
| Status: | New --- | ||||||
| Severity: | Affects Some People | ||||||
| Priority: | --- | ||||||
| Version: | 12.1-STABLE | ||||||
| Hardware: | Any | ||||||
| OS: | Any | ||||||
| Attachments: |
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Created attachment 212811 [details]
Proof of concept to pass getaddrinfo(3) hints
Simplistic proof of concept attached. This is not my expertise in any way so please advise on a better solution.
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The following is observed on pfSense and the root cause appears to be ifconfig(8) does not make use of the specified "inet" or "inet6" when checking and setting tunnel remote destinations. /status_services.php: The command '/sbin/ifconfig 'ipsec1000' inet tunnel 'x.x.x.203' 'distantend.example.com' up' returned exit code '1', the output was 'ifconfig: source and destination address families do not match' Please see below for a simple point to point/same LAN configuration where this can be reproduced. Host 1 configuration: "vm1" /etc/hosts 10.100.82.107 vm2 x:x:x:x:a00:27ff:fe64:d5bd vm2 Host 2 configuration: "vm2" /etc/hosts 10.100.82.105 vm1 x:x:x:x:a00:27ff:fec9:1f9e vm1 Host 1 CLI prep: root@vm1:~ # ifconfig gre0 create root@vm1:~ # ifconfig gre0 inet 10.0.0.1/30 10.0.0.2 root@vm1:~ # ifconfig gre0 inet tunnel 10.100.82.105 10.100.82.107 Host 2 CLI prep: root@vm2:~ # ifconfig gre0 create root@vm2:~ # ifconfig gre0 inet 10.0.0.2/30 10.0.0.1 root@vm2:~ # ifconfig gre0 inet tunnel 10.100.82.107 10.100.82.105 root@vm2:~ # ping -c 1 10.0.0.1 This produces a working configuration. But in an environment with dual stack as in the case of my pfSense router the hostname fails to properly resolve respecting the passed 'inet' flag. Host 2 (unpatched): root@vm2:~ # ifconfig gre0 inet tunnel 10.100.82.107 vm1 ifconfig: source and destination address families do not match root@vm2:~ # ifconfig gre0 inet6 tunnel x:x:x:x:a00:27ff:fe64:d5bd vm1 Host 1 (patched to pass getaddrinfo hints): root@vm1:/usr/src/sbin/ifconfig # ifconfig gre0 inet tunnel 10.100.82.105 vm2 root@vm1:/usr/src/sbin/ifconfig # ifconfig gre0 gre0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1476 options=80000<LINKSTATE> tunnel inet 10.100.82.105 --> 10.100.82.107 inet6 fe80::a00:27ff:fec9:1f9e%gre0 prefixlen 64 scopeid 0x3 inet 10.0.0.1 --> 10.0.0.2 netmask 0xfffffffc groups: gre nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL> root@vm1:/usr/src/sbin/ifconfig # ifconfig gre0 inet6 tunnel x:x:x:x:a00:27ff:fec9:1f9e vm2 root@vm1:/usr/src/sbin/ifconfig # ifconfig gre0 gre0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> metric 0 mtu 1476 options=80000<LINKSTATE> tunnel inet6 x:x:x:x:a00:27ff:fec9:1f9e --> x:x:x:x:a00:27ff:fe64:d5bd inet6 fe80::a00:27ff:fec9:1f9e%gre0 prefixlen 64 scopeid 0x3 inet 10.0.0.1 --> 10.0.0.2 netmask 0xfffffffc groups: gre nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>