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- kernel.panic=3
- net.ipv4.conf.default.arp_ignore=1
- net.ipv4.conf.all.arp_ignore=1
- net.ipv4.ip_forward=1
- net.ipv4.icmp_echo_ignore_broadcasts=1
- net.ipv4.icmp_ignore_bogus_error_responses=1
- net.ipv4.tcp_ecn=0
- net.ipv4.tcp_fin_timeout=30
- net.ipv4.tcp_keepalive_time=120
- net.ipv4.tcp_syncookies=1
- net.ipv4.tcp_timestamps=0
- net.core.netdev_max_backlog=30
- net.ipv4.netfilter.ip_conntrack_checksum=0
- net.ipv4.netfilter.ip_conntrack_max=16384
- net.ipv4.netfilter.ip_conntrack_tcp_timeout_established=3600
- net.ipv4.netfilter.ip_conntrack_udp_timeout=60
- net.ipv4.netfilter.ip_conntrack_udp_timeout_stream=180
- net.ipv6.conf.all.forwarding=1
- net.netfilter.nf_conntrack_checksum=0
- net.netfilter.nf_conntrack_max=16384
- net.netfilter.nf_conntrack_tcp_timeout_established=3600
- net.netfilter.nf_conntrack_udp_timeout=60
- net.netfilter.nf_conntrack_udp_timeout_stream=180
- # disable bridge firewalling by default
- net.bridge.bridge-nf-call-arptables=0
- net.bridge.bridge-nf-call-ip6tables=0
- net.bridge.bridge-nf-call-iptables=0
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