[c-nsp] Cursed IP address

[Friedrich, Gregor]

Hello Victor 

Seems to be some multicast receiving problem 224.0.0.5/6? Are there filters / IGMP stuff? 
What kind of  L2 design do you have in the segment?  Some years ago we had problems with multicast  and SDH MUX systems. 
 
Regards Gregor 

> Good point, thank you. After looking at debug OSPF hello, we have
> found out that Hello packets with src=10.65.127.246 are being sent by
> the device
> 
> Nov 27 05:29:35.923: OSPF: Send hello to 224.0.0.5 area 0 on Vlan333 from
> 10.65.127.246
> 
> but they are not Rcv-ed by other devices on the network segment.
> 
> Hello packets with any other src IP address, e.g. 10.65.127.243, are being
> received as expected.
> 
> We are at a loss what could be blocking packets with this particular
> src addr.
> 
> --
> Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
> sip:sudakov at sibptus.tomsk.ru
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