Please don't use 11.1-MFIB with DVMRP-mode tunnels

[Bill Fenner <]

Folks,

  Please don't use the 11.1-MFIB branch with DVMRP-mode tunnels.  There is
a bug (which Cisco knows about and is working on) which can cause DVMRP-mode
tunnels to black hole all traffic flowing through them.  Route exchange
still works, so traffic gets routed through them; however forwarding is
broken and will black hole.

  Until Cisco has a fix available, please move your DVMRP-mode tunnels off
of your 11.1-MFIB routers, or run something other than 11.1-MFIB on them.
Otherwise, you can potentially cause black holes (this explains several of
the MBone's current problems).

Thanks,
  Bill