What does "nf" flag mean in NHRP
show ip nhrp:
100.0.0.3/32 via 100.0.0.3
Tunnel1 created 00:31:15, expire 01:59:45
Type: dynamic, Flags: router implicit nf <----------------------------------------
NBMA address: 9.0.0.4
(Claimed NBMA address: 99.0.0.4)
(no-socket)