Defined in 5 files as a macro:
- contrib/libpcap/ppp.h, line 55 (as a macro)
- contrib/tcpdump/ppp.h, line 60 (as a macro)
- sbin/spppcontrol/spppcontrol.c, line 52 (as a macro)
- sys/net/if_spppsubr.c, line 109 (as a macro)
- sys/net/ppp_defs.h, line 71 (as a macro)