Implement DNS server with fake IP address replacements.

The IPv4 addresses in the answer will be hash-mapped to addresses in the pool.

Makefile

@@ -0,0 +1,22 @@
+CC=gcc
+CFLAGS=-Wall
+LDFLAGS=
+DEPS=$(wildcard *.h)
+SRC=$(wildcard src/*.c)
+OBJ=$(patsubst src/%.c, build/%.o, $(SRC))
+
+.PHONY: all clean
+
+all: build/dotp
+
+clean:
+	rm $(OBJ)
+	rm build/dotp
+
+build/%.o: src/%.c $(DEPS)
+	mkdir -p build
+	$(CC) -c -o $@ $< $(CFLAGS)
+
+build/dotp: $(OBJ)
+	mkdir -p build
+	$(CC) -o $@ $^ $(LDFLAGS) -lev -lnftables