Date: Sat, 13 Jul 2002 11:21:16 -0300 From: Cedric Berger <cedric@wireless-networks.com> To: Shannon -jj Behrens <jj@nttmcl.com> Cc: freebsd-java@FreeBSD.ORG Subject: Re: IPv6 in Java Message-ID: <3D30375C.3040805@wireless-networks.com> References: <20020711151633.E14694@alicia.nttmcl.com>
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I tried to do that with OpenBSD one year ago.
There was many problems. the two more important are:
1) OpenBSD/NetBSD and Linux uses a different
value for AF_INET6, and, the emulation layer was not doing
the syscall translation. FreeBSD may have the same problem.
From a NetBSD PR from itojun:
sys/compat/linux/linux_socket.c does not try to rewrite sa_family
in sockaddr args to various syscalls that take sockaddr
(connect, bind, sendto...). therefore, when LINUX_AF_xx differs
from AF_xx, linux emulation won't work. {LINUX_,}AF_INET6 is
an example.
2) JDK 1.4.0 on Linux try to read a file in /proc/sys/net/interface
or something like that (use truss, I don't remember) to decide if there
are IPv6-enabled interfaces on the host, and to decide whether or not
enabling IPv6 support. This is easy to cheat-around: just copy this
proc file from a linux system and put it under /emul/linux/proc...
Cedric
Shannon -jj Behrens wrote:
>Has anyone gotten IPv6 working in Java on FreeBSD? Naturally, Java only
>started supporting IPv6 in 1.4. Unfortunately, IPv6 doesn't seem to work
>under linux-jdk-1.4.0.
>
>Thanks,
>-jj
>
>
>
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