https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226688
Bug ID: 226688
Summary: [ipfw] rejects adding 255.255.255.255 to a table
Product: Base System
Version: 11.1-RELEASE
Hardware: i386
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Adding 255.255.255.255/32 to an ipfw table results in "Invalid argument".
This is a freshly-installed 11.1-RELEASE system:
FreeBSD kiki0 11.1-RELEASE FreeBSD 11.1-RELEASE #0 r321309: Fri Jul 21 04:10:47
UTC 2017 [email protected]:/usr/obj/usr/src/sys/GENERIC i386
Repeat by:
**********************************************************************
root@kiki0:/usr/local/etc # ipfw /dev/stdin
table 30 create type addr algo addr:radix
table 30 add 255.255.255.254/32
added: 255.255.255.254/32 0
table 30 add 255.255.255.255/32
error: 255.255.255.255/32 0
Line 3: Adding record failed: Invalid argument
root@kiki0:/usr/local/etc # ipfw /dev/stdin
table 30 list
--- table(30), set(0) ---
255.255.255.254/32 0
table 30 detail
--- table(30), set(0) ---
kindex: 3, type: addr
references: 0, valtype: legacy
algorithm: addr:radix
items: 1, size: 416
IPv4 algorithm radix info
items: 1 itemsize: 72
IPv6 algorithm radix info
items: 0 itemsize: 76
table 30 destroy
^D
root@kiki0:/usr/local/etc #
**********************************************************************
See also bug #180731 -- it's hard not to suspect that there
is a tendency toward confusion between -1 as an error code and
255.255.255.255, which has the same bit pattern (at least on
32-bit machines).
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