15 lines
399 B
Bash
Executable File
15 lines
399 B
Bash
Executable File
#!/bin/sh
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if ping -c 4 9.9.9.9;
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then
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echo "4G seems good"
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else
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echo -ne "AT^NDISDUP=1,0\r\n" > /dev/ttyUSB0
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sleep 1
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echo -ne "AT^NDISDUP=1,1,\"sl2sfr\"\r\n" > /dev/ttyUSB0
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sleep 1
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udhcpc -i wwan0
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iptables -t nat -A POSTROUTING -o wwan0 -j MASQUERADE
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iptables -A FORWARD -i br0 -j ACCEPT
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iptables -t mangle -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
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fi
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