Hi list,
I saw
https://lists.freebsd.org/pipermail/freebsd-jail/2011-March/001500.html
in the archives but didn't see anything more recent.
This is with 10.3-RELEASE
% freebsd-version
10.3-RELEASE-p6
% jls
JID IP Address Hostname Path
[...]
3 192.168.1.12 bfcpp.codelibre.net /jail/bfcpp
[...]
From jail.conf:
bfcpp {
host.hostname = "bfcpp.codelibre.net";
interface = "bge0";
ip4.addr = "192.168.1.12";
ip6.addr = "2001:8b0:860:ddbd:3aea:a7ff:feab:7002";
allow.raw_sockets = "1";
path = "/jail/bfcpp";
mount.devfs;
mount.fdescfs;
mount.procfs;
mount.fstab="/etc/fstab.bfcpp";
exec.start = "/bin/sh /etc/rc";
exec.stop = "/bin/sh /etc/rc.shutdown";
exec.clean;
exec.jail_user = "root";
exec.system_jail_user;
}
amys% ping -c1 localhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.046 ms
--- localhost ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.046/0.046/0.046/0.000 ms
amys% ping6 -c1 localhost
PING6(56=40+8+8 bytes) ::1 --> ::1
16 bytes from ::1, icmp_seq=0 hlim=64 time=0.252 ms
--- localhost ping6 statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 0.252/0.252/0.252/0.000 ms
Inside this jail:
bfcpp% ifconfig
bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=c019b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>
ether 38:ea:a7:ab:61:53
inet 192.168.1.12 netmask 0xffffffff broadcast 192.168.1.12
inet6 2001:8b0:860:ddbd:3aea:a7ff:feab:7002 prefixlen 128
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
media: Ethernet autoselect (100baseTX <full-duplex>)
status: active
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
bfcpp% ping localhost
PING localhost (127.0.0.1): 56 data bytes
64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0.056 ms
^C
--- localhost ping statistics ---
1 packets transmitted, 1 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 0.056/0.056/0.056/0.000 ms
bfcpp% ping6 localhost
PING6(56=40+8+8 bytes) 2001:8b0:860:ddbd:3aea:a7ff:feab:7002 --> ::1
ping6: sendmsg: Can't assign requested address
ping6: wrote localhost 16 chars, ret=-1
ping6: sendmsg: Can't assign requested address
ping6: wrote localhost 16 chars, ret=-1
ping6: sendmsg: Can't assign requested address
ping6: wrote localhost 16 chars, ret=-1
^C
--- localhost ping6 statistics ---
3 packets transmitted, 0 packets received, 100.0% packet loss
As you can see, inside the jail I have a working IPv4 loopback, but not
a working IPv6 loopback. Both work correctly on the host system. This
is inconsistent, and it's breaking stuff which needs the v6 loopback to
be functional.
Is this a case of a bad default, a misconfiguration or a bug in the
loopback support for jails?
Thanks,
Roger
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