Date: Mon, 4 Oct 2004 19:29:53 +0300 From: Vyacheslav Vovk <vovk@km.ua> To: freebsd-net@freebsd.org Subject: traceroute, tunnel or...? Message-ID: <200410041929.53902.vovk@km.ua>
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[44] vovk@sl:~>uname -a
FreeBSD xx.km.ua 4.10-STABLE FreeBSD 4.10-STABLE #13: Mon Oct 4 09:18:11
EEST 2004 vovk@xx.km.ua:/usr/src/sys/compile/xx i386
[45] vovk@sl:~>ifconfig gif0
gif0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1280
tunnel inet 192.168.144.9 --> 192.168.144.1
inet 195.46.39.98 --> 195.46.39.97 netmask 0xfffffffc
After upgrade from 4.10-RELEASE to 4.10-STABLE has ceased to work UDP
traceroute to 195.46.39.98 from external host.
[258] vovk@info:/>t 195.46.39.98
traceroute to 195.46.39.98 (195.46.36.98), 64 hops max, 44 byte packets
1 cindy-fa0-vid0.ic.km.ua (195.46.36.7) 0.270 ms 0.589 ms 0.266 ms
2 * * *
3 * * *
4 *
[46] vovk@sl:~>tcpdump -n -i gif0 host 195.46.36.1
tcpdump: listening on gif0
15:29:44.663473 195.46.36.1.37640 > 195.46.39.98.33438: udp 16 [ttl 1]
15:29:49.678637 195.46.36.1.37640 > 195.46.39.98.33439: udp 16 [ttl 1]
15:29:54.690954 195.46.36.1.37640 > 195.46.39.98.33440: udp 16 [ttl 1]
15:29:59.767877 195.46.36.1.37640 > 195.46.39.98.33441: udp 16
15:30:04.703614 195.46.36.1.37640 > 195.46.39.98.33442: udp 16
15:30:09.732862 195.46.36.1.37640 > 195.46.39.98.33443: udp 16
but work ICMP traceroute
[260] vovk@info:/etc/namedb/pri>t -P icmp 195.46.39.98
traceroute to 195.46.39.98 (195.46.36.98), 64 hops max, 64 byte packets
1 cindy-fa0-vid0.ic.km.ua (195.46.36.7) 0.278 ms 0.209 ms 0.733 ms
2 RE-2M.sl (195.46.39.98) 34.505 ms 42.646 ms 48.319 ms
[47] vovk@sl:~>tcpdump -n -i gif0 host 195.46.36.1
15:33:56.245450 195.46.36.2 > 195.46.39.98: icmp: echo request [ttl 1]
15:33:56.245527 195.46.39.98 > 195.46.36.2: icmp: echo reply
15:33:56.306208 195.46.36.2 > 195.46.39.98: icmp: echo request [ttl 1]
15:33:56.306275 195.46.39.98 > 195.46.36.2: icmp: echo reply
15:33:56.350447 195.46.36.2 > 195.46.39.98: icmp: echo request [ttl 1]
15:33:56.350516 195.46.39.98 > 195.46.36.2: icmp: echo reply
For what reasons has ceased to work traceroute, taking into account what at
upgrade from 4.10-R to 4.10-STABLE did not vary firewall and kernel options?
--
wbr, slava [vovk-uanic]
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