On 10/01/18 20:55, Aham Brahmasmi wrote: > Hi, > > What is the correct bitmask for the 224.0.0.0 Martian table entry in > pf.conf? > > There are two bitmasks in two links on this page - > http://www.team-cymru.org/bogon-reference-http.html. /3 in the The Text > Bogon List, Aggregated and /4 in IPv4 Fullbogons. /3 is also present in > https://www.openbsd.org/faq/pf/example1.html. > > I think it should be /3, but I am still learning pf. > > Thanks. > > Regards, > ab >
See here: https://www.iana.org/assignments/ipv4-address-space/ipv4-address-space.xhtml 224/4 is the multicast allocation (224-239) 240/4 is for future use (240-255) 224/3 is both of the above if you don't use multicast then 224/3 should be ok, otherwise 240/4 G ps. for multicast specific see https://www.iana.org/assignments/multicast-addresses/multicast-addresses.xhtml
