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Date: Fri, 14 Jun 2002 18:37:24 +0900
Message-ID: <ybsr8jai4kr.wl@ett.sat.t.u-tokyo.ac.jp>
From: Hidetoshi Shimokawa <simokawa@sat.t.u-tokyo.ac.jp>
To: FreeBSD-users-jp@jp.FreeBSD.org
In-Reply-To: <20020614140652.936D.ENDO_T@nifty.com>
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Subject: [FreeBSD-users-jp 69340] Re: ping: sendto: No buffer space available
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$B2<@n$G$9(B.

At Fri, 14 Jun 2002 14:11:06 +0900,
$B1sF#(B $B=SM5(B wrote:
> 
> $B1sF#$G$9!#(B
> 
> AirH" $B$NB3$-$J$s$G$9$,!"(Bping $B$rBG$D$H(B
> 
> ping: sendto: No buffer space available
>
> $B$C$F=P$^$9!#(B
> $B$3$l$C$F$J$s$G$7$g$&$+!)(B

interface (tun) $B$N=PNO(B queue $B$,(B $B0n$l$F$$$k$N$@$H;W$$$^$9(B.
FreeBSD-3.3 $B$@$H$I$&$@$,$o$+$j$^$;$s$,(B, -stable $B$N(B source $B$@$H(B
if_tun.c $B$G(B IF_QFULL() $B$H$+$,$"$k$"$?$j$G$9(B.
ifp->if_collisions++ $B$H$+$7$F$k$N$G(B netstat -i $B$G$_$k$H(B,
tun device $B$N(B collision $B$,A}$($F$k$+$b$7$l$^$;$s(B.

> 
> $B;O$a$F8+$k$N$G!"$h$/J,$+$j$^$;$s!#(B
> $B$b$7$+$7$F!"$3$l$,860x$G7R$,$C$?$j7R$,$i$J$+$C$?$j!)!&!&!&!&(B

$B$3$l$O(B, $B860x$H$$$&$+(B, $B$`$7$m7k2L$H$$$C$?$[$&$,6a$$5$$,$7$^$9(B.

> $B$4B8$8$NJ}!"$I$&$$$&$H$-$3$l$,=P$F!"=P$J$$$h$&$K$9$k$K$O$I$&$9$Y$-$+!"(B
> $B$465<x2<$5$$!#(Bm(_ _)m

$B$"$?$j$^$($G$9$,(B, OS $B$G$I$&$,$s$P$C$F$b(B AirH" $B$NBS0h0J>e$N(B packet
$B$r$D$C$3$a$P(B, packet $B$rMn$5$6$m$&F@$^$;$s(B.

ifqmaxlen $B$rBg$-$/$9$l$P(B, $BC;4|E*$KN?$2$k$+$b$7$l$^$;$s$,(B, $BK\Mh$O(B
$BBS0h0J>e$N(B packet $B$rAw$i$J$$$h$&$K$9$k$Y$-$G$9(B.

$BBP=h$H$7$F$O(B,

- UDP$BEy(B $B$r;H$&%"%W%j%1!<%7%g%s$OE,@Z$JBS0h@_Dj$G;H$&(B.
- TCP $B$r;H$&%"%W%j%1!<%7%g%s$,$"$k$N$G$"$l$P(B, window size $B$r>.$5$/$9$k(B.
- ICMP (ping) $B$O$d$?$i$a$C$?$iAw$i$J$$(B.

- $BMn$9(B packet $B$rA*$S$?$$$N$G$"$l$P(B, dummy net, ALTQ $BEy$r(B
  $B;H$C$F(B packet shaping $B$r9T$&(B.

$B$"$?$j$G$7$g$&$+(B.

/\ Hidetoshi Shimokawa
\/  simokawa@sat.t.u-tokyo.ac.jp
PGP public key: http://www.sat.t.u-tokyo.ac.jp/~simokawa/pgp.html
