On 8-apr-04, at 11:30, Hank Nussbacher wrote:
<http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/ prod_bulletin09186a00801abfda.html#wp55584>
Not bad - Feb 2003 till April 2004 to code, test and implement a change driven by NANOG :-)
Here is the feature guide, for those who can't wait to implement it: http://www.cisco.com/en/US/products/sw/iosswrel/ps1829/ products_feature_guide09186a008020e6f5.html However, this says a TTL of 254 will be accepted. Now the fact that I can talk to boxes running a slightly older IOS with a TTL of 0 without any problems suggests to me that emitting packets with a TTL of 255 on router A and accepting packets with a TTL of 254 on router B allows for the presence of a router C in the middle. That can't be good. Also, they say enabling this feature won't change behavior for outgoing packets. So do these now have a TTL of 255, regardless?