[syslinux] pxelinux doesn't suppress common prefix if nothing precedes double colon

Paul Whittaker whitpa at velocitynet.com.au
Sat Aug 25 19:22:00 PDT 2007

Contrary to the pxelinux.doc documentation, the common filename prefix 
is only suppressed if an explicit hostname or IP address precedes the 
double colon, e.g.  A tcpdump of TFTP requests 
reveals that the double colon does nothing in implicit case (::/foobar 
is the same as /foobar, i.e. gets mapped to /pxelinux//foobar or 
whatever). also does this.

I first noticed the  problem in 3.51, and have confirmed that it still 
exists in the current (3.52 0x46d0cdef) git code.

Sorry, my 80x86 assembly skills are too rusty to fix this myself, but it 
should be 100% reproduceable.

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