fix arp attributes for freebsd
fix arp attributes for freebsd

davide125/ohai,numericillustration/ohai,bougyman/ohai,jseely/ohai,btm/ohai,mattray/ohai,acaiafa/ohai,cmluciano/ohai,http-418/ohai,375gnu/ohai,bougyman/ohai,criteo-forks/ohai,nathwill/ohai,dreamnite/ohai,dreamnite/ohai,joyent/ohai,criteo-forks/ohai,juliandunn/ohai,phreakocious/ohai,davide125/ohai,glennmatthews/ohai,johnbellone/ohai,nathwill/ohai,chef/ohai,broadinstitute/ohai,zshuo/ohai,zuazo-forks/ohai,juliandunn/ohai,shtzr840329/ohai,sh9189/ohai,MSOpenTech/ohai,mattray/ohai,phreakocious/ohai,chef/ohai,jaymzh/ohai,ktheory/ohai,Juniper/ohai,Juniper/ohai,higanworks/ohai,zshuo/ohai,adamleff/ohai,acaiafa/ohai,jaymzh/ohai,Fodoj/ohai,cmluciano/ohai,jbfavre/ohai,adamleff/ohai,glennmatthews/ohai,tas50/ohai-1,johnbellone/ohai,shtzr840329/ohai,n-marton/ohai,sh9189/ohai,thommay/ohai,higanworks/ohai,jbfavre/ohai,Fodoj/ohai,numericillustration/ohai,broadinstitute/ohai,MSOpenTech/ohai,375gnu/ohai,tas50/ohai-1,jseely/ohai,n-marton/ohai,http-418/ohai,btm/ohai