configure warning

[Anthony Gast]

configure: WARNING: net/if.h: present but cannot be compiled
configure: WARNING: net/if.h: check for missing prerequisite headers?
configure: WARNING: net/if.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to address@hidden ##
configure: WARNING:     ## ------------------------------------ ##

configure: WARNING: netinet/if_ether.h: present but cannot be compiled
configure: WARNING: netinet/if_ether.h: check for missing prerequisite headers?
configure: WARNING: netinet/if_ether.h: proceeding with the preprocessor's 
result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to address@hidden ##
configure: WARNING:     ## ------------------------------------ ##

Solaris 8 with JKP 27.  Output of uname -a:

SunOS <hostname> 5.8 Generic_108528-27 sun4u sparc 2155909526 Sun_Microsystems 
<NIS domain>

SUNWspro8.0 C/C++ compiler.