Date: Thu, 5 Feb 2004 17:15:57 +0200 From: "Alexander Botov" <alexb@mail.bg> To: "Lee Dilkie" <lee@dilkie.com>, <freebsd-questions@freebsd.org> Subject: Re: forwarding with ttl=1 Message-ID: <00bf01c3ebfa$f4ec3ce0$0200a8c0@ALIENX>
next in thread | raw e-mail | index | archive | help
> TTL (Time To Live) is a counter value in an IP packet that gets = decremented > by every "hop" (router). When it reaches a value of zero, the packet = is > discarded. One more thing . If the packet is going to be forwarded and the TTL has = value of 1 than the hop discards the packet . "A system should never receive IP datagram with TTL of 0 , but Net/3 = generates the correct ICMP error if this happens since ip_ttl is = examined after the packet is considered for local delivery and before it = is forwarded" [TCP/IP Illustrated , Volume 2 - Gary R. Wright , W.Richard Stevens]
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?00bf01c3ebfa$f4ec3ce0$0200a8c0>