the flag is the combination of the following values:
tunnel-only (1),
transport-only (2),
esp-rfc1827 (8),
ah-rfc1826 (16),
esp-rfc2045 (32),
ah-rfc1828 (64),
ah-rfc2202 (128)
Giving an example: the value 33 represents tunnel + esp-rfc2045
Sources for this description
Circitor
Parsed from COSINE-ORION-MIB.mib · COSINE-ORION-MIB
Source file: Download COSINE-ORION-MIB.mib
MIBdepot
Source file: Download orion_mib_v31.txt
Source file: Download cosine_all.mib
Source file: Download COSINE-ORION-MIB.mib.txt