[Olsr-users] duplicate hna messages

[John Hay]

Hi,

Our ipv6 olsr network sometimes deteriorate to something close to unusable.
Sometimes it helps to reboot or restart an olsr, but not always. So this
weekend when it happened again, I compiled a newer tcpdump (that understand
ipv6 olsr packets) and had a look. I'll add an example at the end.

What I saw was a lot of "duplicate" hna messages. The ttl, hops and msg-seq
was different, but the networks and originator the same. Should that be?
Should it not be filtered to only one usable one?

Our network consists of various boxes, i386, arm, mips, FreeBSD, linux,
olsr 0.5.6r7, 0.6.0 and probably others.

Is that something fixed in a later version?

Thanks.

John
-- 
John Hay -- (spam-protected) / (spam-protected)


11:16:32.381230 IP6 (hlim 1, next-header UDP (17) payload length: 1428) fd9c:6829:597c:4:2d0:12ff:fe09:7333.698 > ff0e::1.698: [udp sum ok] OLSRv6, seq 0x7f4f, length 1420
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 69, hop 186
	  vtime 108.000s, msg-seq 0x9104, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 67, hop 188
	  vtime 108.000s, msg-seq 0xee97, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	Nameservice Message (0x82), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 147, hop 108
	  vtime 1792.000s, msg-seq 0xeede, length 92
	  Version 1, Entries 1
	    #0: type 000000, length 11, address fd9c:6829:597c:30:216:b6ff:fed9:df9e, name "no_name_yet"
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 129, hop 126
	  vtime 108.000s, msg-seq 0xeed5, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 211, hop 44
	  vtime 108.000s, msg-seq 0x3717, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 147, hop 108
	  vtime 108.000s, msg-seq 0x6403, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 67, hop 188
	  vtime 108.000s, msg-seq 0x9104, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 23, hop 232
	  vtime 108.000s, msg-seq 0xee75, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 41, hop 214
	  vtime 108.000s, msg-seq 0xee7b, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	Nameservice Message (0x82), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 141, hop 114
	  vtime 1792.000s, msg-seq 0xeede, length 92
	  Version 1, Entries 1
	    #0: type 000000, length 11, address fd9c:6829:597c:30:216:b6ff:fed9:df9e, name "no_name_yet"
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 131, hop 124
	  vtime 108.000s, msg-seq 0xeed5, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 151, hop 104
	  vtime 108.000s, msg-seq 0x6403, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 61, hop 194
	  vtime 108.000s, msg-seq 0x9104, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 133, hop 122
	  vtime 108.000s, msg-seq 0xeed5, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 151, hop 104
	  vtime 108.000s, msg-seq 0x6403, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64
	HNA Message (0x04), originator fd9c:6829:597c:30:216:b6ff:fed9:df9e, ttl 7, hop 248
	  vtime 108.000s, msg-seq 0x90c1, length 88
	  Advertised networks (total 2)
	    #0: fec0::aaaa:0:0:a03:3400/120
	    #0: fd9c:6829:597c:df9c::/64