[Bug 265306] sysutils/tmux: has tcsh send DNS query
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Date: Tue, 19 Jul 2022 07:17:12 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=265306
Bug ID: 265306
Summary: sysutils/tmux: has tcsh send DNS query
Product: Ports & Packages
Version: Latest
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: Individual Port(s)
Assignee: mat@FreeBSD.org
Reporter: tatsuki_makino@hotmail.com
Flags: maintainer-feedback?(mat@FreeBSD.org)
Assignee: mat@FreeBSD.org
Created attachment 235350
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=235350&action=edit
experimental patch
DNS server may receive DNS queries related to tmux.
The following is an excerpt from my ISC BIND log.
19-Jul-2022 15:54:30.421 client @0x803584960 ::1#59707 (tmux\(67594\).%0): view
internal-in: query: tmux\(67594\).%0 IN A + (::1)
19-Jul-2022 15:54:30.421 client @0x803584960 ::1#60153 (tmux\(67594\).%0): view
internal-in: query: tmux\(67594\).%0 IN AAAA + (::1)
This query seems to be sent when a user whose login shell is tcsh/csh creates a
new pane of tmux.
This is probably related to the function getremotehost in
/usr/src/contrib/tcsh/tc.func.c .
The patch is an experimental patch to stop this DNS query.
This patch misleads tcsh into thinking that tmux is an X server connecting to a
unix domain socket :)
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