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19 lines
550 B
Python
19 lines
550 B
Python
import json
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import re
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import subprocess
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def ll6ping(ifname, flags=["-w60", "-c1", "-L", "-n"]):
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argv = ["ping"] + flags + ["ff02::1%{}".format(ifname)]
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try:
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ping = subprocess.run(argv,
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stdout=subprocess.PIPE,
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stderr=subprocess.DEVNULL,
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text=True, check=True)
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except subprocess.CalledProcessError:
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return None
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m = re.search("^\d+ bytes from ([:0-9a-f]+%\S+):", ping.stdout, re.MULTILINE)
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return m.group(1) if m else None
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