# cd /usr/src/sbin/ifconfig/
# make
cc -O2 -pipe    -DINET6 -DKAME_SCOPEID -c ifconfig.c
ifconfig.c: In function `printgroupattribs':
ifconfig.c:753: error: `SIOCGIFGATTR' undeclared (first use in this function)
ifconfig.c:753: error: (Each undeclared identifier is reported only once
ifconfig.c:753: error: for each function it appears in.)
ifconfig.c:757: error: structure has no member named `ifgr_attrib'
ifconfig.c: In function `setgroupattribs':
ifconfig.c:777: error: structure has no member named `ifgr_attrib'
ifconfig.c:781: error: `SIOCSIFGATTR' undeclared (first use in this function)
ifconfig.c: In function `setifnwflag':
ifconfig.c:1445: error: elements of array `nwflags' have incomplete type
ifconfig.c:1445: error: `IEEE80211_FLAGS' undeclared (first use in this function                                                         )
ifconfig.c:1445: error: storage size of `nwflags' isn't known
ifconfig.c:1457: error: `SIOCG80211FLAGS' undeclared (first use in this function                                                         )
ifconfig.c:1465: error: `SIOCS80211FLAGS' undeclared (first use in this function                                                         )
ifconfig.c: In function `ieee80211_status':
ifconfig.c:1586: error: structure has no member named `nr_max_rssi'
ifconfig.c:1658: error: `SIOCG80211FLAGS' undeclared (first use in this function                                                         )
ifconfig.c:1661: error: `IEEE80211_F_USERBITS' undeclared (first use in this fun                                                         ction)
ifconfig.c: In function `ieee80211_printnode':
ifconfig.c:1742: error: structure has no member named `nr_max_rssi'
*** Error code 1

Stop in /usr/src/sbin/ifconfig.