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| author | Vasil Dimov <vd@FreeBSD.org> | 2020-08-24 21:03:31 +0200 |
|---|---|---|
| committer | Vasil Dimov <vd@FreeBSD.org> | 2020-08-24 21:50:59 +0200 |
| commit | 1ea57ad67406b3aaaef5254bc2fa7e4134f3a6df (patch) | |
| tree | 6c79a8f12caca034006db2e2320ce2339411ff0c /doc | |
| parent | cb1ee1551cf39905ccb67e3d07b0e3aaaca18ce3 (diff) | |
| download | bitcoin-1ea57ad67406b3aaaef5254bc2fa7e4134f3a6df.tar.xz | |
net: don't accept non-left-contiguous netmasks
A netmask that contains 1-bits after 0-bits (the 1-bits are not
contiguous on the left side) is invalid [1] [2].
The code before this PR used to parse and accept such
non-left-contiguous netmasks. However, a coming change that will alter
`CNetAddr::ip` to have flexible size would make juggling with such
netmasks more difficult, thus drop support for those.
[1] https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing#Subnet_masks
[2] https://tools.ietf.org/html/rfc4632#section-5.1
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/release-notes.md | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/doc/release-notes.md b/doc/release-notes.md index 23983dcd7b..b018a6f67f 100644 --- a/doc/release-notes.md +++ b/doc/release-notes.md @@ -135,6 +135,10 @@ Updated settings in future releases. Refer to the help of the affected settings `-whitebind` and `-whitelist` for more details. (#19191) +- Netmasks that contain 1-bits after 0-bits (the 1-bits are not contiguous on + the left side, e.g. 255.0.255.255) are no longer accepted. They are invalid + according to RFC 4632. + Changes to Wallet or GUI related settings can be found in the GUI or Wallet section below. Tools and Utilities |