K 10
svn:author
V 3
hrs
K 8
svn:date
V 27
2019-05-16T19:09:41.156805Z
K 7
svn:log
V 642
Fix hostname to be returned in an ICMPv6 NI Reply message defined
in RFC 4620, ICMPv6 Node Information Queries.  A vnet jail with an
IPv6 address sent a hostname of the host environment, not the
jail, even if another hostname was set to the jail.

This change can be tested by the following commands:

 # ifconfig epair0 create
 # jail -c -n j1 vnet host.hostname=vnetjail path=/ persist
 # ifconfig epair0b vnet j1
 # ifconfig epair0a inet6 -ifdisabled auto_linklocal up
 # jexec j1 ifconfig epair0b inet6 -ifdisabled auto_linklocal up
 # ping6 -w ff02::1%epair0a

Differential Revision:	https://reviews.freebsd.org/D20207
MFC after:	1 week

END