CC tools/probe-req.o
tools/probe-req.c: In function ‘get_interface_callback’:
tools/probe-req.c:122:22: error: storage size of ‘ifr’ isn’t known
122 | struct ifreq ifr;
| ^~~
tools/probe-req.c:155:42: error: ‘IFF_UP’ undeclared (first use in this function)
155 | if (r == -1 || !(ifr.ifr_flags & IFF_UP))
| ^~~~~~
tools/probe-req.c:155:42: note: each undeclared identifier is reported only once for each function it appears in
tools/probe-req.c:122:22: error: unused variable ‘ifr’ [-Werror=unused-variable]
122 | struct ifreq ifr;
| ^~~
