Hi,
the inet:host type should not use the inet:domain-name as its member because the
latter type doesn't satisfy the requirements of RFC 952 and 1123 on host names.
For example, the type now permits a single dot (".") as the value or the
underscore character.
I propose to change the "host" type as follows:
OLD
typedef host {
type union {
type inet:ip-address;
type inet:domain-name;
}
...
}
NEW
typedef host {
type union {
type inet:ip-address;
type inet:host-name;
}
...
}
A reasonable definition of "host-name" is IMO a domain name whose labels are NR-
LDH (non-registered letter-digit-hyphen label) [RFC 5890]:
typedef host-name {
type string {
pattern
'((([a-zA-Z0-9]([a-zA-Z0-9\-]){0,61})?[a-zA-Z0-9]\.)*'
+ '([a-zA-Z0-9]([a-zA-Z0-9\-]){0,61})?[a-zA-Z0-9]\.?)';
pattern '(.*\.)?..\-\-.*' {
modifier invert-match;
}
length "2..253";
...
}
}
Lada
--
Ladislav Lhotka
Head, CZ.NIC Labs
PGP Key ID: 0xB8F92B08A9F76C67
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