Date: Thu, 18 Apr 2024 02:19:49 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 278394] Reproducible kernel panic related to IPv4 routes populated by bird2 (BGP) Message-ID: <bug-278394-7501-21B7QmM0ra@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-278394-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-278394-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D278394 --- Comment #19 from Zhenlei Huang <zlei@FreeBSD.org> --- @Gregory bird2 learned more precise route for remote end of the vxlan tunnel from the vxlan interface. When that route was installed into kernel FIB then it ende= d up recursive encapsulation. Unfortunately vxlan(4) does not handle the recursi= ve correctly and thus results in kernel stack overflow. As a workaround, use a dedicated fib for vxlan tunnel. Assume x.x.x.x is yo= ur tunnel remote end, and y.y.y.y is original route for x.x.x.x . ``` # sysctl -n net.fibs=3D2 1 -> 2 # route add x.x.x.x y.y.y.y -fib 1 # ifconfig vxlan0 tunnelfib 1 ``` Now happy starting bird2 :) --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=
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