Date: Wed, 5 Apr 2017 17:18:23 -0400 From: "James B. Byrne" <byrnejb@harte-lyne.ca> To: freebsd-questions@freebsd.org Subject: IPv6 experimentation in jails. Message-ID: <2d8044a2a2d8a5dd0f73d7db03bb962b.squirrel@webmail.harte-lyne.ca>
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How does one enable and properly configure a working ipv6 i/f on a
Freebsd host where the host is presently located on an ipv4 network
with no ipv6 gateway?
I have tried putting this in /etc/rc.conf
### IPv6 setting
ifconfig_em0_ipv6="inet6 accept_rtadv" # Assign address from rtadv
rtsold_enable="YES" # enable router
solicitation
#ipv6_defaultrouter="::00:192.168.209.1" # Support for IPv6 on
router
ipv6_defaultrouter="::ff:192.168.209.1" # No support for IPv6 on
router
and this in the relevant ezjail config:
export jail_hllmx18_hostname="hllmx18"
export jail_hllmx18_ip="\
lo2|127.0.2.1,\
em0|192.168.209.18,\
em0|192.168.209.118,\
em0|::2"
Which results in this:
ezjail-admin list
STA JID IP Hostname Root Directory
--- ---- --------------- ------------------ -------------------
ZR 1 127.0.2.1 hllmx18 /usr/jails/hllmx18
1 em0|192.168.209.18
1 em0|192.168.209.118
1 em0|::2
However, ifconfig shows this:
em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
ether 00:1c:c0:f2:1f:9e
inet 192.168.209.41 netmask 0xffffff00 broadcast 192.168.209.255
inet 192.168.209.33 netmask 0xffffffff broadcast 192.168.209.33
inet 192.168.209.133 netmask 0xffffffff broadcast 192.168.209.133
inet6 fe80::21c:c0ff:fef2:1f9e%em0 prefixlen 64 scopeid 0x1
nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL>
media: Ethernet autoselect (1000baseT <full-duplex>)
status: active
re0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=8209b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_MAGIC,LINKSTATE>
ether 00:0a:cd:1d:44:fe
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
media: Ethernet autoselect (10baseT/UTP <half-duplex>)
status: no carrier
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet6 ::1 prefixlen 128
inet6 fe80::1%lo0 prefixlen 64 scopeid 0x3
inet 127.0.0.1 netmask 0xff000000
nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
groups: lo
lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet 192.168.209.33 netmask 0xffffffff
inet 127.0.1.1 netmask 0xffffffff
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
groups: lo
lo2: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
inet 192.168.209.18 netmask 0xffffffff
inet 127.0.2.1 netmask 0xffffffff
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
groups: lo
pflog0: flags=141<UP,RUNNING,PROMISC> metric 0 mtu 33160
groups: pflog
As well, this configuration breaks the assignment of 192.168.209.18 to
the jail:
ssh 192.168.209.18 -t -Y 'bash || sh'
ssh: connect to host 192.168.209.18 port 22: No route to host
ping 192.168.209.18
PING 192.168.209.18 (192.168.209.18) 56(84) bytes of data.)
>From 192.168.209.2 icmp_seq=2 Destination Host Unreachable
I do not see anything in the way of an ipv6 being made available to
lo2. What other steps are required? Why is the existing ipv4 address
mapping broken when I do this?
--
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James B. Byrne mailto:ByrneJB@Harte-Lyne.ca
Harte & Lyne Limited http://www.harte-lyne.ca
9 Brockley Drive vox: +1 905 561 1241
Hamilton, Ontario fax: +1 905 561 0757
Canada L8E 3C3
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