On Sun, 11 Apr 2021 07:42:23 +0300 Özkan KIRIK <ozkan.ki...@gmail.com> wrote:
> Hello, > > > root@f13:~ # jexec client ping www.google.com > ping: UDP connect: No route to host > > root@f13:~ # jexec client ping -4 -c 2 www.google.com > PING www.google.com (216.58.212.100): 56 data bytes > 64 bytes from 216.58.212.100: icmp_seq=0 ttl=128 time=85.487 ms > 64 bytes from 216.58.212.100: icmp_seq=1 ttl=128 time=90.243 ms > > --- www.google.com ping statistics --- > 2 packets transmitted, 2 packets received, 0.0% packet loss > round-trip min/avg/max/stddev = 85.487/87.865/90.243/2.378 ms > root@f13:~ # That's interesting - ping6 was merged into ping last year, the basic logic of deciding which AF to use is here: https://cgit.freebsd.org/src/tree/sbin/ping/main.c#n128 Essentially it does: 1. IPv6 disabled? Use IPv4 else 2. IPv4 disabled? Use IPv6 else 3. do hostname lookup and decide based on the AF of the first result. As far as I can tell, the result of 3. is not used for the ping though, but only to decide if ping6 or ping should be done. I wonder if this is actually a good idea - gut feeling-wise I would prefer only one lookup to take place when calling ping. That said, what happens if you call: jexec client ping -6 -c 2 www.google.com I assume that should give you some output (including an IP address), even though the ping6 itself will fail. Also, what is your /etc/resolv.conf inside the jail? I suspect that the problem is caused by the gethostbyaddr call in 3. and is not directly IPv6 related - if I compare the code used by ping.c and ping6.c (including capsicum support) with what 3. does, we might have a bigger problem here. Best, Michael > _______________________________________________ > freebsd-net@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org" -- Michael Gmelin _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
