Re: [DNSOP] 2 internet drafts relevant to DNSOP

[paul vixie <[e-mail]>]

joe, et al,

your draft-gersch-dnsop-revdns-cidr-01 is very clean and simple; the
draft and the design are of admirable quality. as a co-author of RFC
2317 i agree that it does not suit the needs of bgp security since it
seeks only to provide a method of fully naming hosts, not networks.

importantly, i see no reference to RFC 1101 in your draft. RFC 1101
describes a way to name networks, and while at first it did not seem to
be compatible with CIDR, implementation (in "netstat -r" back in BSD/OS
3.1) showed that RFC 1101 was in fact not as classful as it appeared.

i recommend a review of these functions, contained in the file dns_nw.c,
present in bind8 as src/lib/irs/dns_nw.c, and also present in older
versions of bind9, as well as various versions of netbsd and athena.

static struct nwent *   get1101byaddr(struct irs_nw *, u_char *, int);
static struct nwent *   get1101byname(struct irs_nw *, const char *);
static struct nwent *   get1101answer(struct irs_nw *,
                                      u_char *ansbuf, int anslen,
                                      enum by_what by_what,
                                      int af, const char *name,
                                      const u_char *addr, int addrlen);
static struct nwent *   get1101mask(struct irs_nw *this, struct nwent *);
static int              make1101inaddr(const u_char *, int, char *, int);

you may find that some of your work has already been done for you, or,
you may find that this is related work that should be referenced in your
draft along with the reasons why your proposed method is necessary.

paul