R. Christian McDonald
21f2245de2
if_me(4) registers its net.link.me node with the static OID number
IFT_TUNNEL, the same number if_gre(4) has used for net.link.gre since
2003, so the two tunnel drivers collide under net.link. Until
d35c4cfad5 that only printed a warning and left two nodes with the
same number; since then sysctl_register_oid() panics, so loading if_me
after if_gre (or the other way round) takes the box down:
kldload if_gre
kldload if_me
panic: sysctl: OID number(131) is already in use for 'me'
Use OID_AUTO like the other tunnel drivers. Nothing addresses the node
by number.
Reviewed by: ae
MFC after: 3 days
Sponsored by: Rubicon Communications, LLC ("Netgate")
Differential Revision: https://reviews.freebsd.org/D60536
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