Why this error is coming?Anyway to fix it?

Friends,
Recently I checked the kernel boot messages as:
#dmesg | more
sending pkt_too_big (len[1500] pmtu[1400]) to self
sending pkt_too_big (len[1500] pmtu[1400]) to self
sending pkt_too_big (len[1500] pmtu[1400]) to self
sending pkt_too_big (len[1500] pmtu[1400]) to self
TCP: Treason uncloaked! Peer 218.93.94.223:45521/80 shrinks window 3200049802:3200050802. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:45521/80 shrinks window 3200049802:3200050802. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:45521/80 shrinks window 3200049802:3200050802. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:37658/80 shrinks window 4087922404:4087924345. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:37658/80 shrinks window 4087922404:4087924345. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:37658/80 shrinks window 4087922404:4087924345. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:37738/80 shrinks window 4123796796:4123798729. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:37738/80 shrinks window 4123796796:4123798729. Repaired.
TCP: Treason uncloaked! Peer 218.93.94.223:37738/80 shrinks window 4123796796:4123798729. Repaired.

Why they are showing up?Is this serious?

 

 

 

 

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