Defined in 3 files as a union:

• bsd/net/if_fake.c, line 4163 (as a union)
• bsd/net/if_headless.c, line 1328 (as a union)
• bsd/net/if_redirect.c, line 1678 (as a union)

Referenced in 3 files:

• bsd/net/if_fake.c, line 4174
• bsd/net/if_headless.c, line 1339
• bsd/net/if_redirect.c, line 1689