Modified the access specifier for `net::IP` and `net::IP::Network`.
Modified the access specifier for `net::IP` and `net::IP::Network`.

Review: https://reviews.apache.org/r/60713/

andschwa/mesos,neilconway/mesos,reneploetz/mesos,abudnik/mesos,neilconway/mesos,andschwa/mesos,zmalik/mesos,chhsia0/mesos,abudnik/mesos,dforsyth/mesos,verizonlabs/mesos,kaysoky/mesos,asamerh4/mesos,kaysoky/mesos,gsantovena/mesos,chhsia0/mesos,Gilbert88/mesos,reneploetz/mesos,kaysoky/mesos,zmalik/mesos,chhsia0/mesos,dforsyth/mesos,reneploetz/mesos,reneploetz/mesos,verizonlabs/mesos,dforsyth/mesos,abudnik/mesos,dforsyth/mesos,gsantovena/mesos,zmalik/mesos,andschwa/mesos,andschwa/mesos,verizonlabs/mesos,jpeach/mesos,reneploetz/mesos,verizonlabs/mesos,jpeach/mesos,Gilbert88/mesos,andschwa/mesos,Gilbert88/mesos,jpeach/mesos,verizonlabs/mesos,gsantovena/mesos,gsantovena/mesos,Gilbert88/mesos,kaysoky/mesos,dforsyth/mesos,abudnik/mesos,jpeach/mesos,asamerh4/mesos,dforsyth/mesos,Gilbert88/mesos,zmalik/mesos,kaysoky/mesos,abudnik/mesos,gsantovena/mesos,neilconway/mesos,verizonlabs/mesos,dforsyth/mesos,verizonlabs/mesos,kaysoky/mesos,chhsia0/mesos,asamerh4/mesos,chhsia0/mesos,jpeach/mesos,neilconway/mesos,Gilbert88/mesos,jpeach/mesos,Gilbert88/mesos,jpeach/mesos,neilconway/mesos,zmalik/mesos,abudnik/mesos,reneploetz/mesos,zmalik/mesos,zmalik/mesos,neilconway/mesos,andschwa/mesos,chhsia0/mesos,gsantovena/mesos,asamerh4/mesos,kaysoky/mesos,abudnik/mesos,chhsia0/mesos,neilconway/mesos,asamerh4/mesos,asamerh4/mesos,asamerh4/mesos,reneploetz/mesos,gsantovena/mesos,andschwa/mesos