cat > ~/.termux/boot/ssh-master.sh << "EOF"
#!/bin/bash
sleep 20
rm -f ~/.ssh/sockets/*
ssh -MNf d 2>/dev/null
ssh -MNf a 2>/dev/null
ssh -MNf o 2>/dev/null
ssh -MNf w 2>/dev/null
EOF
chmod +x ~/.termux/boot/ssh-master.sh