[Bug 208438] ports-mgmt/pkg ports-mgmt/poudriere Connection to own IP on port 80 in jail without configuring it

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208438

Alexander Kauer <alexander+freebsd at affine.space> changed:

           What    |Removed                     |Added
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                 CC|                            |alexander+freebsd at affine.sp
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--- Comment #1 from Alexander Kauer <alexander+freebsd at affine.space> ---
That was the wrong button...

The issue arises when I enable tcp blackholing with `sysctl
net.inet.tcp.blackhole=2`. Then pkg hangs for quite some time at e.g. `pkg
update`, before everything works as expected, again.

sockstat shows that pkg tries to connect to the jail (in that case 127.0.3.1)
at port 80:

root at mail:~ # sockstat | grep pkg
root     pkg        30275 5  tcp4   127.0.3.1:46822       127.0.3.1:80

This, in combination with the blackholing, produces the hang I suppose. I never
configured pkg to look into 127.0.3.1:80 as far as I can tell.

Others seem to have this problem as well:
https://lists.freebsd.org/pipermail/freebsd-jail/2015-November/002914.html

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