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Hi Ondrej and all,<br>
<br>
after a long time I need to setup a ppp tunnel between linux<br>
machine and a MikroTik router and the linux ppp0 interface<br>
results up and running as follows:<br>
<br>
ppp0 Link encap:Point-to-Point Protocol <br>
inet addr:44.134.32.240 P-t-P:10.58.2.1
Mask:255.255.255.255<br>
UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1450 Metric:1<br>
RX packets:442 errors:0 dropped:0 overruns:0 frame:0<br>
TX packets:359 errors:0 dropped:0 overruns:0 carrier:0<br>
collisions:0 txqueuelen:3 <br>
RX bytes:31271 (30.5 Kb) TX bytes:23174 (22.6 Kb)<br>
<br>
the ppp0 interface reported by BIRD is the following:<br>
<br>
ppp0 up (index=23)<br>
PtP Multicast AdminUp LinkUp MTU=1450<br>
44.134.32.240/32 (Primary, opposite 10.58.2.1, scope univ)<br>
<br>
<br>
as you can see the Mask value on the above linux interface is
255.255.255.255.<br>
Now running an OSPF session on both sides (linux BIRD OSPF and
Mikrotik OSPF)<br>
it happens that the BIRD on linux (ir0rm-7.ampr.org/44.134.32.240)
transmits<br>
the Hello packets with a Mask 0.0.0.0 and then the Mikrotik discards
the BIRD<br>
Hello packets due to mismatch in network mask (see the following
tcpdump<br>
on linux machine and Mikrotik log picture).<br>
There is a continue Hello packets as below with no apparent OSPF
routing<br>
exchange.<br>
I'm using the latest BIRD git version...<br>
Something wrong on my side?<br>
<br>
regards,<br>
gus [i0ojj]<br>
<br>
---------------------<br>
<br>
16:57:41.140591 IP (tos 0xc0, ttl 1, id 54307, offset 0, flags
[none], proto OSPF (89), length 64)<br>
ir0rm-7.ampr.org > ospf-all.mcast.net: OSPFv2, Hello, length
44<br>
Router-ID 10.58.1.1, Area 0.0.0.254, Authentication Type: none
(0)<br>
Options [External]<br>
Hello Timer 10s, Dead Timer 40s, Mask 0.0.0.0, Priority 1<br>
16:57:41.402749 IP (tos 0xc0, ttl 1, id 48993, offset 0, flags
[none], proto OSPF (89), length 64)<br>
10.58.2.1 > ospf-all.mcast.net: OSPFv2, Hello, length 44<br>
Router-ID 10.58.1.1, Area 0.0.0.254, Authentication Type: none
(0)<br>
Options [External]<br>
Hello Timer 10s, Dead Timer 40s, Mask 255.255.255.255,
Priority 1<br>
Designated Router 10.58.2.1<br>
<br>
<img alt="" src="cid:part1.07050206.07080406@tin.it" width="716"
height="459"><br>
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