You missed a ~ 
- $data .= chr hex $1 while $temp=s/(..)//;
+ $data .= chr hex $1 while $temp=~s/(..)//;

[download]

OP = original post(er). BTW, welcome to the monastery! :-)

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re^5: SNMP Trap Decoding issue by shmem
in thread SNMP Trap Decoding issue by ikkeniet

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