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Date:      Sun, 22 Mar 2020 19:57:26 +0100
From:      Michael Osipov <1983-01-06@gmx.net>
To:        Max Peak <max.peak@formindata.com>, freebsd-java@freebsd.org
Subject:   Re: openjdk11- tomcat9- no ipv6
Message-ID:  <02f61978-ba84-8b27-a255-f2f0c929c82d@gmx.net>
In-Reply-To: <73ea4b69-619b-cdaf-d690-a50bfed23c35@formindata.com>
References:  <73ea4b69-619b-cdaf-d690-a50bfed23c35@formindata.com>

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Am 2020-03-22 um 19:30 schrieb Max Peak:
> Greetings freebsd-java gurus,
>=20
> I am experiencing some difficulty with the freebsd-openjdk11 port. My=20
> setup is x86machine, freebsd12, tomcat9, openjdk11.
>=20
> Tomcat listens to port 8443 for both tcp4 and tcp6 when using openJDK8.=
=20
> After a config change (../rc.d/tomcat9) to use openjdk11 instead, tomca=
t=20
> listens only for tcp4, not tcp6.
>=20
> See freebsd *web and networking=C2=A0 services* forum, thread: *openjdk=
11-=20
> tomcat9- no ipv6* for more detail. Please let me know if there is=20
> anything I can do to help resolve this issue.
>=20
> Also, I would be interested in a temporary workaround. While I need the=
=20
> OS to work dual-stack (which it does), I only need tomcat to work on tc=
p6.

Tomcat committer here...

There has been some fuzz on users@tomcat.a.o recently on IPv6. There=20
seem also to be an issue with IPv6-mapped IPv4 addresses.

I highly doubt that this is a Tomcat issue per s=C3=A9, it is either an O=
S or=20
JDK one. Greg knows better about the internals of the C implementation.=20
A general advise is if it does not work with one connector for dual=20
stack. Configure two with the specific addresses.

Unfortunately, our entire enterprise network is IPv4 only, therefore I=20
cannot test anything on our servers.

Have you actually tried to bind a dual-stack socket with netcat/socat=20
and see whether this works on FreeBSD?

Please try and report.

Michael




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