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Are there any socket options similar to "IP_RECVTTL" or an alternate way to retrieve TTL values from received tcp packets in RHEL?

Solution Verified - Updated 2016-02-17T00:54:45+00:00 -

Issue

For datagram sockets (UDP) you have these socket options IP_RECVTTL and IP_TTL which helps reading the TTL values of incoming and outgoing packets.
Is there any similar options available for TCP sockets as well?
Why sockets options likeIP_RECVTTL fails to retrieve TTL values from incoming socket?
Are there any ways to detect tethering from incoming TCP packet using TTL ?

Environment

Red Hat Enterprise Linux .
tcp socket options.

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