netdev - Re: TCP 2MSL on loopback

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Message-ID: <45EDD17F.5000203@cosmosbay.com>
Date:	Tue, 06 Mar 2007 21:39:27 +0100
From:	Eric Dumazet <dada1@...mosbay.com>
To:	Howard Chu <hyc@...as.com>
CC:	netdev@...r.kernel.org
Subject: Re: TCP 2MSL on loopback

Howard Chu a écrit :
> Eric Dumazet wrote:
>> Let me see, any chance you can try the prog on 2.6.20 ?
> 
> Not any time soon.
>>
>> If not, please send :
>>
>> grep . /proc/sys/net/ipv4/*
> 
> This is the output on the laptop:
> /proc/sys/net/ipv4/icmp_echo_ignore_all:0
> /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts:1
> /proc/sys/net/ipv4/icmp_errors_use_inbound_ifaddr:0
> /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses:1
> /proc/sys/net/ipv4/icmp_ratelimit:250
> /proc/sys/net/ipv4/icmp_ratemask:6168
> /proc/sys/net/ipv4/igmp_max_memberships:20
> /proc/sys/net/ipv4/igmp_max_msf:10
> /proc/sys/net/ipv4/inet_peer_gc_maxtime:120
> /proc/sys/net/ipv4/inet_peer_gc_mintime:10
> /proc/sys/net/ipv4/inet_peer_maxttl:600
> /proc/sys/net/ipv4/inet_peer_minttl:120
> /proc/sys/net/ipv4/inet_peer_threshold:65664
> /proc/sys/net/ipv4/ip_default_ttl:64
> /proc/sys/net/ipv4/ip_dynaddr:0
> /proc/sys/net/ipv4/ip_forward:0
> /proc/sys/net/ipv4/ipfrag_high_thresh:262144
> /proc/sys/net/ipv4/ipfrag_low_thresh:196608
> /proc/sys/net/ipv4/ipfrag_max_dist:64
> /proc/sys/net/ipv4/ipfrag_secret_interval:600
> /proc/sys/net/ipv4/ipfrag_time:30
> /proc/sys/net/ipv4/ip_local_port_range:32768    61000
> /proc/sys/net/ipv4/ip_nonlocal_bind:0
> /proc/sys/net/ipv4/ip_no_pmtu_disc:0
> /proc/sys/net/ipv4/tcp_abc:0
> /proc/sys/net/ipv4/tcp_abort_on_overflow:0
> /proc/sys/net/ipv4/tcp_adv_win_scale:2
> /proc/sys/net/ipv4/tcp_app_win:31
> /proc/sys/net/ipv4/tcp_base_mss:512
> /proc/sys/net/ipv4/tcp_congestion_control:reno
> /proc/sys/net/ipv4/tcp_dma_copybreak:4096
> /proc/sys/net/ipv4/tcp_dsack:1
> /proc/sys/net/ipv4/tcp_ecn:0
> /proc/sys/net/ipv4/tcp_fack:1
> /proc/sys/net/ipv4/tcp_fin_timeout:60
> /proc/sys/net/ipv4/tcp_frto:0
> /proc/sys/net/ipv4/tcp_keepalive_intvl:75
> /proc/sys/net/ipv4/tcp_keepalive_probes:9
> /proc/sys/net/ipv4/tcp_keepalive_time:7200
> /proc/sys/net/ipv4/tcp_low_latency:0
> /proc/sys/net/ipv4/tcp_max_orphans:32768
> /proc/sys/net/ipv4/tcp_max_syn_backlog:1024
> /proc/sys/net/ipv4/tcp_max_tw_buckets:180000
> /proc/sys/net/ipv4/tcp_mem:98304        131072  196608
> /proc/sys/net/ipv4/tcp_moderate_rcvbuf:1
> /proc/sys/net/ipv4/tcp_mtu_probing:0
> /proc/sys/net/ipv4/tcp_no_metrics_save:0
> /proc/sys/net/ipv4/tcp_orphan_retries:0
> /proc/sys/net/ipv4/tcp_reordering:3
> /proc/sys/net/ipv4/tcp_retrans_collapse:1
> /proc/sys/net/ipv4/tcp_retries1:3
> /proc/sys/net/ipv4/tcp_retries2:15
> /proc/sys/net/ipv4/tcp_rfc1337:0
> /proc/sys/net/ipv4/tcp_rmem:4096        87380   4194304
> /proc/sys/net/ipv4/tcp_sack:1
> /proc/sys/net/ipv4/tcp_slow_start_after_idle:1
> /proc/sys/net/ipv4/tcp_stdurg:0
> /proc/sys/net/ipv4/tcp_synack_retries:5
> /proc/sys/net/ipv4/tcp_syncookies:1
> /proc/sys/net/ipv4/tcp_syn_retries:5
> /proc/sys/net/ipv4/tcp_timestamps:1
> /proc/sys/net/ipv4/tcp_tso_win_divisor:3
> /proc/sys/net/ipv4/tcp_tw_recycle:0
> /proc/sys/net/ipv4/tcp_tw_reuse:0
> /proc/sys/net/ipv4/tcp_window_scaling:1
> /proc/sys/net/ipv4/tcp_wmem:4096        16384   4194304
> /proc/sys/net/ipv4/tcp_workaround_signed_windows:0

Arf... dont tell me you forgot to do this...

echo 1 >/proc/sys/net/ipv4/tcp_tw_recycle
echo 1 >/proc/sys/net/ipv4/tcp_tw_reuse

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