DMVPN and OSPFv2 support

[whagstro]

Is DMVPN supported with OSPF routing, I see in the NHRP readme that multicasting is the issue; but in the OSPF documentation mentions adding the iptables jump to NFLOG, this seems to work, but I am not able to get a DMVPN phase 3 point-to-multipoint to work with a Cisco router, I was wondering if anyone was able to get this to work. This is my configuration:

cat ospfd.conf

log syslog debugging
router ospf
ospf router-id 5.5.5.5
ospf abr-type ibm
no ospf rfc1583compatibility
no ospf opaque-lsa
timers throttle spf 200 1000 10000
refresh timer 1800
auto-cost reference-bandwidth 100
no passive-interface ip_mGRE
network 172.16.1.0/24 area 0
network 5.5.5.5/32 area 0
area 0 range 5.5.5.5/32
no area 0 nssa
no area 0 stub
area 0 range 172.16.1.5/24
no area 0 nssa
no area 0 stub
exit
interface ip_mGRE
ip ospf network point-to-multipoint
ip ospf cost 1000
ip ospf priority 1
ip ospf hello-interval 30
ip ospf dead-interval 120
ip ospf retransmit-interval 5
ip ospf transmit-delay 1
exit

cat nhrpd.conf

log syslog debugging
nhrp nflog-group 1
nhrp multicast-nflog-group 2
interface ip_mGRE
description DMVPN Tunnel Interface
ip nhrp network-id 1
ip nhrp holdtime 7200
ip nhrp nhs 172.16.1.1 nbma 10.0.0.114
ip nhrp redirect
ip nhrp registration no-unique
ip nhrp shortcut
ip address 172.16.1.5/24
tunnel protection vici profile IPSec_dmvpn_policy0
tunnel source wan
The issue seems more on the OSPF side, any ideas on whats going wrong?

[adudek16]

Try changing the gre interface ip to a /32.
Also you do not mention what version of frr you are using.