Is there any doc for the "skip options" in the discovery process ?
# s=sys v=vlan V=vltag m=modules g=devrrd A=arp F=fwd
# p=dprot j=adr i=IFinf c=IFcomment u=spd/dup t=trf e=err
# d=discard b=broadcast w=poe a=adm o=opr f=ftpcfg W=web
# l=APloc G=toprrd M=MAClink P=policy-action X=existing dev (except -A)
# retire: N=nodes, T=IF/IPtrack D=dns I=IPs L=links
