slpd(8) on Linux
The text 178e38dd28f4, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody) shipped it.
SLPv2 Service Agent (SA)/Directory Agent (DA)
Flags it lists
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-d