> Getting this message when trying to set a "gateway" capture filter.
> 
> < Unable to parse filter string ('gateway' not supported in this
> configuration) >
> 
> pleas explain, is this an ethereal, winpcap, or another component problem ?
> what does "this configuration" mean, windows versions ?
No, it means "a configuration where libpcap/winpcap is built to support
IPv6 (yes, I know, Windows doesn't support IPv6 on the box;
nevertheless, if you get that error, it means that libpcap/winpcap was
built to handle IPv6).
The WinDump man page at
	http://netgroup-serv.polito.it/windump/docs/manual.htm
says:
	gateway host
	     True if the packet used host as a gateway.  I.e., the
	     ethernet source or destination address was host but neither
	     the IP source nor the IP destination was host.  Host must
	     be a name and must be found in both /etc/hosts and
	     /etc/ethers.  (An equivalent expression is
		ether host ehost and not host host
	     which can be used with either names or numbers for host /
	     ehost.) This syntax does not work in IPv6-enabled
		     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
	     configuration at this moment.
	     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^