On Thu, 1 Apr 2010, Pieter de Boer wrote:
Hi folks,
A couple of days ago I sent a mail to this list detailing an issue I have. To
summarize: every once in a while my ::1 address on lo0 is replaced with
another ipv6-address that's configured on lo3 and used in a child jail of a
jail. I've been digging a bit through the FreeBSD source code and found a
possible spot where this may occur.
In the function in6_selectsrc() in /sys/netinet6/in6_src.c the following code
can be found:
TAILQ_FOREACH(ia, &V_in6_ifaddrhead, ia_link) {
...
prison_local_ip6(cred, &ia->ia_addr.sin6_addr,
(inp != NULL &&
(inp->inp_flags & IN6P_IPV6_V6ONLY) != 0)) != 0)
continue;
...
}
prison_local_ip6() appears to replace a loopback address with a jail's main
address:
if (IN6_IS_ADDR_LOOPBACK(ia6)) {
bcopy(&pr->pr_ip6[0], ia6, sizeof(struct in6_addr));
...
The way I read this code is that it replaces the interface address 'ia' when
it is a loopback address with the prison's main address.
Can anyone with more clue about this code tell if I read this correctly and
possibly even help with fixing the problem if that is the case?
You are reading this correctly. Good catch! I'll look how to fix that.
/bz
--
Bjoern A. Zeeb It will not break if you know what you are doing.
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