Hi,
we've had an interesting interop problem, and we don't know if this is a
client, server, or just interop problem. However, I thought I'd bring it
to the attention here.
The server produced an output that was in the format of:
2a00:db8:1:2:3::5:0
When the client then asked for information about this object it used:
2a00:db8:1:2:3:0:5:0
The netconf server then returned no answer, because it didn't consider
these to be the same (string match).
I have included what I think is relevant text below, it seems the client
reformatted the address into canonical format. However, the description
below seems to indicate that all those IPv6 types are ok. If the server
must use canonical format, is there a MUST somewhere that says so?
What does it mean that something is a "canonical format"?
https://tools.ietf.org/html/rfc6021
typedef ipv6-address {
type string {
....
}
description
"The ipv6-address type represents an IPv6 address in full,
mixed, shortened, and shortened-mixed notation. The IPv6
address may include a zone index, separated by a % sign.
The zone index is used to disambiguate identical address
values. For link-local addresses, the zone index will
typically be the interface index number or the name of an
interface. If the zone index is not present, the default
zone of the device will be used.
The canonical format of IPv6 addresses uses the compressed
format described in RFC 4291, Section 2.2, item 2 with the
following additional rules: the :: substitution must be
applied to the longest sequence of all-zero 16-bit chunks
in an IPv6 address. If there is a tie, the first sequence
of all-zero 16-bit chunks is replaced by ::. Single
all-zero 16-bit chunks are not compressed. The canonical
format uses lowercase characters and leading zeros are
not allowed. The canonical format for the zone index is
the numerical format as described in RFC 4007, Section
11.2.";
reference
"RFC 4291: IP Version 6 Addressing Architecture
RFC 4007: IPv6 Scoped Address Architecture
RFC 5952: A Recommendation for IPv6 Address Text Representation";
}
--
Mikael Abrahamsson email: swm...@swm.pp.se
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