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6 votes
Accepted

Why is MSS important? Why can't we just rely on the MTU?

The MTU is a local interface property. It is not signaled to communication partners.[*1] TCP exchanges the MSS between communication partners (it's an option but used commonly). [*1] You might argue ...
Zac67's user avatar
  • 85.4k
3 votes

Why is MSS important? Why can't we just rely on the MTU?

What a host sees as the MTU may be completely different than what the host on the other end of a connection has for an MTU. When TCP creates a connection, there is the option to send to the other side ...
Ron Maupin's user avatar
  • 99.9k
1 vote
Accepted

Where is netmask information stored?

netmask is not stored in the TCP/IP packet. No, it's not. The netmask is a parameter of an interface binding, so it's stored in its config, in either router or host. A netmask are also part of a ...
Zac67's user avatar
  • 85.4k
1 vote

Why is the IPv6 link-local address range fe80::/10 rather than fe80::/64?

Even today this question remains open and maybe even offers more logical explanation itself. fe80::/10 (without the rest of specification which states that other 54 bits have to be zeros) indicates ...
Faris Tanković's user avatar

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