Why are there many IPv6 routes in the provided Ubuntu NetPlan?

In the SYS and KS dedicated servers, if we install Ubuntu from the OVH provided image and take a look at the NetPlan config file /etc/netplan/50-cloud-init.yaml as well as the default routes for IPv4 and IPv6, there are a large number of additional IPv6 routes configured.

Can someone tell me what all these additional IPv6 routes are for? They seem to vary slightly from server to server. I am wondering of they are really needed? Ideally I would like to remove the non-default routes if they are not needed so that I can simplify our automated installation scripts.

For example:

network:
version: 2
ethernets:
eno1:
accept-ra: false
addresses:
- 2001:41d0:2:9434::1/56
dhcp4: true
match:
macaddress: 0c:c4:7a:a8:95:e0
nameservers:
addresses:
- 2001:41d0:3:163::1
routes:
- to: default
via: 2001:41d0:2:94ff:ff:ff:ff:ff

- to: 2001:41d0:2:9440::/58
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9480::/58
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9400::/59
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94c0::/59
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9420::/60
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94e0::/60
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9438::/61
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94f0::/61
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9430::/62
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94f8::/62
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9436::/63
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94fc::/63
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9435::/64
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94fe::/64
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:8000::/65
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:8000::/65
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:4000::/66
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:4000::/66
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:2000::/67
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:2000::/67
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:1000::/68
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:1000::/68
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:800::/69
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:800::/69
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:400::/70
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:400::/70
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:200::/71
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:200::/71
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:100::/72
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:100::/72
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:80::/73
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff::/73
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:40::/74
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:80::/74
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:20::/75
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:c0::/75
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:10::/76
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:e0::/76
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:8::/77
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:f0::/77
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:4::/78
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:f8::/78
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:2::/79
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:fc::/79
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:1::/80
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:fe::/80
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:8000::/81
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:8000::/81
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:4000::/82
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:4000::/82
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:2000::/83
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:2000::/83
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:1000::/84
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:1000::/84
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:800::/85
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:800::/85
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:400::/86
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:400::/86
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:200::/87
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:200::/87
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:100::/88
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:100::/88
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:80::/89
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff::/89
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:40::/90
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:80::/90
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:20::/91
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:c0::/91
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:10::/92
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:e0::/92
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:8::/93
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:f0::/93
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:4::/94
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:f8::/94
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:2::/95
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:fc::/95
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434:0:1::/96
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:fe::/96
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::8000:0/97
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:8000:0/97
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::4000:0/98
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:4000:0/98
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::2000:0/99
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:2000:0/99
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::1000:0/100
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:1000:0/100
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::800:0/101
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:800:0/101
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::400:0/102
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:400:0/102
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::200:0/103
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:200:0/103
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::100:0/104
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:100:0/104
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::80:0/105
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff::/105
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::40:0/106
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:80:0/106
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::20:0/107
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:c0:0/107
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::10:0/108
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:e0:0/108
via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:f0:0/109
via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:f8:0/110
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::2:0/111
via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::8000/113
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:8000/113
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::4000/114
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:4000/114
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::2000/115
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:2000/115
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- to: 2001:41d0:2:9434::1000/116
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:1000/116
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- to: 2001:41d0:2:9434::800/117
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:800/117
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::400/118
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:400/118
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::200/119
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:200/119
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::100/120
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:100/120
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::80/121
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::40/122
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:80/122
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::20/123
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:c0/123
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::10/124
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:e0/124
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::8/125
via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::4/126
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:94ff:ff:ff:ff:f8/126
via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::2/127
via: 2001:41d0:2:94ff:ff:ff:ff:ff
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
- to: 2001:41d0:2:9434::/128
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via: 2001:41d0:2:94ff:ff:ff:ff:ff
set-name: eno1