https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=194453
--- Comment #4 from b...@boba.name ---
(In reply to Hiren Panchasara from comment #2)
> (In reply to boba from comment #0)
> > It's impossible to create "pipe" with bandwidth higher than 2Gbits per
> > second. Possible due to "signed" type of variable.
> >
> > # ipfw pipe 1 config bw 2700mbit/s
> > ipfw: bandwidth too large
>
> I think you are right that its overflowing because of "signed" type.
>
> A simple change like this may fix the problem:
>
> Index: dummynet.c
> ===================================================================
> --- dummynet.c (revision 270969)
> +++ dummynet.c (working copy)
> @@ -546,7 +546,7 @@
> if_name[namelen] = '\0';
> *bandwidth = 0;
> } else { /* read bandwidth value */
> - int bw;
> + uint32_t bw;
> char *end = NULL;
>
> bw = strtoul(arg, &end, 0);
This patch will not work at all because of following check few lines after it:
if (bw < 0)
errx(EX_DATAERR, "bandwidth too large");
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