TTL value length is 255.I know sometimes when packets are waiting in queue TTL reduces without hop changing.But TTL is often equal to the number of hops.Isn't 255 too long?!Isn't 30-40 more logical? ...
I know there is IHL field in IPV4 which is Internet Header Length.Since an IPv4 header may contain a variable number of options, this field specifies the size of the header. But there is no IHL or ...