grep( Localize ploblem on Japanese)

[isse\(Metawaves\)]

Hello, I'm Isse, using Redhat 7.3.

I always thank to you for your work.

So, Perhaps this is  Localize problem so, could you please tell me if you know
contact address ?

Isse

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<Problem Title>: grep -v did not return

<Version>

address@hidden Work]# grep -V
grep (GNU grep) 2.5.1

Copyright 1988, 1992-1999, 2000, 2001 Free Software Foundation, Inc.
これはフリー・ソフトウェアです。複製に関する条件はソースをご覧ください。
これは無保証です。営利目的やある特定の目的にむけた適正のものでもありません。

<The reappearance method>
    Please set the environment to ja_JP.eucJP.

    > $LANG=ja_JP.eucJP

    Please make the file named "Test" the file's record are repeated about
10000 times as follows.

    "Jul 19 03:25:54 dns kernel: WATCHING.. INPUT: IN=eth1 OUT=eth0
SRC=202.225.137.183 DST=192.168.0.8 LEN=1500 TOS=0x00 PREC=0x00 TTL=56
ID=25623 DF PROTO=TCP SPT=1755 DPT=2273 WINDOW=8072 RES=0x00 ACK URGP=0"

    Please type the command as follows.

    > grep -v "WATCHING" Test

    This grep command did not return or take very long time (10 minutes or
above)

    if the LANG environment variable is deleted, this command returns
immediately ( no problem ).