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Date: Sun, 17 Dec 1995 16:57:44 +1100
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199512170557.QAA26907@godzilla.zeta.org.au>
To: jc@irbs.com, partha@Ipsilon.COM
Subject: Re: ping from a background process stops for input
Cc: bugs@FreeBSD.org
Sender: owner-bugs@FreeBSD.org
Precedence: bulk

>Redirect ping's input from /dev/null or remove this piece of code
>from ping.c:165.

>        if (tcgetattr (0, &ts) != -1) {
>                reset_kerninfo = !(ts.c_lflag & NOKERNINFO);
>                ts.c_lflag |= NOKERNINFO;
>                tcsetattr (0, TCSANOW, &ts);
>        }

This bug was introduced in FreeBSD-2.0.

The NOKERNINFO flag tended to get stuck on while I was testing this.
It is only restored for normal exits and SIGINTs.

Bruce