Date: Thu, 18 Jan 2024 03:52:21 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 276414] rtnetlink: destroying an interface generates spurious RTM_NEWLINKs Message-ID: <bug-276414-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276414 Bug ID: 276414 Summary: rtnetlink: destroying an interface generates spurious RTM_NEWLINKs Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: lexi.freebsd@le-fay.org tested on FreeBSD 15.0-CURRENT #8 main-n267554-c8328f1a7b6e when an interface is destroyed, an rtnetlink socket monitoring RTNLGRP_LINK will get 1 or more spurious RTM_NEWLINKS, followed by the actual RTM_DELLIN= K. this can be observed with 'route monitor' which uses netlink: # ifconfig bridge1 create 03:49:47.538 PID 10747 add/repl iface iface#8 bridge1 admin DOWN oper DOWN = mtu 1500 # ifconfig bridge1 destroy 03:50:14.124 PID 10747 add/repl iface iface#8 bridge1 admin DOWN oper DOWN = mtu 1500 03:50:14.124 PID 10747 delete iface iface#8 bridge1 admin DOWN oper DOWN mtu 1500 with wg(4) interfaces, there are several spurious RTM_NEWLINKs after destro= y: 03:50:44.607 PID 10747 add/repl iface iface#8 wg1 admin DOWN oper DOWN mtu = 1420 03:50:44.607 PID 0 add/repl iface iface#8 wg1 admin DOWN oper DOWN mtu 1= 420 03:50:44.654 PID 10747 add/repl iface iface#8 wg1 admin DOWN oper DOWN mtu = 1420 03:50:44.654 PID 0 delete iface iface#8 wg1 admin DOWN oper DOWN mtu 1420 i'm not particularly familiar with the netlink API, but from reading the documentation, this isn't the behaviour i'd expect. --=20 You are receiving this mail because: You are the assignee for the bug.=
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