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tcpdump.1.in: Delete Linux 2.0 references

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Delete Linux 2.0 bugs from bug list.

Linux 2.0.x releases are from 1996-2004. The man page recommended upgrading to Linux 2.2, released in 1999.

https://en.wikipedia.org/wiki/Linux_kernel_version_history#Releases_up_to_2.6.0

I'm assuming these >20 year old bug references aren't that useful now.
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Jesse Rosenstock 2023-05-07 17:21:23 +02:00 committed by GitHub
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@ -2052,24 +2052,6 @@ in the tcpdump source tree root.
NIT doesn't let you watch your own outbound traffic, BPF will.
We recommend that you use the latter.
.LP
On Linux systems with 2.0[.x] kernels:
.IP
packets on the loopback device will be seen twice;
.IP
packet filtering cannot be done in the kernel, so that all packets must
be copied from the kernel in order to be filtered in user mode;
.IP
all of a packet, not just the part that's within the snapshot length,
will be copied from the kernel (the 2.0[.x] packet capture mechanism, if
asked to copy only part of a packet to userspace, will not report the
true length of the packet; this would cause most IP packets to get an
error from
.BR tcpdump );
.IP
capturing on some PPP devices won't work correctly.
.LP
We recommend that you upgrade to a 2.2 or later kernel.
.LP
Some attempt should be made to reassemble IP fragments or, at least
to compute the right length for the higher level protocol.
.LP