https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235500
Bug ID: 235500
Summary: [netgraph] tunnel nesting limit hard coded
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
After system switch from 11-p8 to 12 nested PPTP & L2TP tunnels based on MPD5
does not work.
Got this error:
kernel: ng0: if_output recursively called too many (2)
After analyzing commits, found that for GIF, GRE and ME interfaces tunnel
nesting limit check introduced and limit can be set by sysctl
net.link.gif.max_nesting (man if_gif(4)):
https://svnweb.freebsd.org/base?view=revision&revision=336131
For the netgraph based tunnel nesting limit is checked against 1 and this limit
can not be set by systcl:
https://svnweb.freebsd.org/base?view=revision&revision=337278
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