Defined in 5 files as a macro:
- contrib/libpcap/ppp.h, line 57 (as a macro)
- contrib/tcpdump/ppp.h, line 63 (as a macro)
- sbin/spppcontrol/spppcontrol.c, line 53 (as a macro)
- sys/net/if_spppsubr.c, line 110 (as a macro)
- sys/net/ppp_defs.h, line 73 (as a macro)